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Oct 24 13 11:30 AM

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Post documents, pictures, history, and data of the Jaguars of America.
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#2 [url]

Dec 24 13 5:43 AM

Record Jaguars of Sasha Siemel

Sasha Siemel was one of the most famous hunters of all times, and probably the most famous jaguar hunter in Brazil.


He claimed that he have hunted over 250 jaguars only with a spear, using a similar method to the used by the American Indians to kill bears.


He is the source of the record jaguar, which is up to 350 lb, here is the images of which could be the heaviest jaguar ever recorded, from the book “Tigrero” (Tiger killers) and the official webpage of Siemel (check that in many parts of America, “tiger” is a synonymous of “jaguar”, just like “lion” is for “puma-cougar”):







The jaguar is simple HUGE, but its belly is apparently full of beef. The large male was named “El Asesino” (The killer) because it hunted many cattle heads in the farms of the Pantanal region. I think that the weight of 350 lb (159 kg, correctly calculated, not the 158 kg often quoted) is a little artificial, as it is obvious that the animal had some stomach content. I am agree with De Almeida in that the heaviest jaguars are up to 130 kg empty belly and up to 150-160 kg when fully gorged. This source also states this:



Here is another record jaguar (300 lb – 136 kg), also from the Pantanal and hunted by Siemel:





These huge 300 lb cats show that jaguars are no need to be very long to reach huge weights.

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#3 [url]

Dec 24 13 5:44 AM

On the Jaguar - By Chui

Interestingly despite the common usage by Sasha Siemel, the jaguar is actually not referred to as “tigre” in Brazil, the common name is “onca pintada”. The term “el tigre” is mostly used in Central America where unlike Portuguese Brazil, the mainstream language is Spanish. Though admittedly I haven’t read his books the impression I get of Sasha Siemel from reading about him elsewhere is that he was bit of a glory seeker.  The whole idea of man going in to the jungles and killing 300lb jaguars with spears seems a bit romanticized to say the least.  Some of the jaguars he killed were huge no doubt but I’m curious if he actually weighed them or just provided estimates.

From Tony Almeida’s “Jaguar Hunting in the Mato Grasso” 1976 edition. The 1990 edition of Almeida’s book contains more detailed data on the size of jaguars which I’ll post later but I thought this was worth sharing as some info here isn’t given in the new edition. For example, the specific measurements of the male Amazon jaguar which can be compared with those for leopards and cougars.






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#4 [url]

Dec 24 13 5:46 AM

Record jaguars from Venezuela

I have found these images in a forum. Apparently, they came from the book “Jaguares, llanos y Baqueanos” from Luis Agosti (in Spanish). This man shows some large cats, here are the images:


Female of 65 kg:



Males of 103 kg and 88 kg respectively:



Huge male of 150 kg!



The smaller specimen’s looks empty belly, but the large one of 150 kg has a large belly, which suggests that it had some stomach content (130 kg empty?).

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#5 [url]

Dec 24 13 5:48 AM

The list of the heaviest jaguars

There are only a few studies about the jaguars in America. Most of them are from El Pantanal (Brazil) and Los Llanos (Venezuela). The few records of other areas show smaller specimens and the samples are very small to.


In order the give a backup to my list of heaviest jaguars on scientific records, I will put all the data on them. From the 10 record specimens, five came from Sunquist & Sunquist (2002) and the others came from other firsthand sources. In the case of the Venezuelan jaguar of 121 kg, the Pantanal male of 119 kg and the Belize male of 66 kg, I have the original sources, but as Sunquist quote them correctly, I will just quote him instead of three different images (now, if someone wants the original images, I will post them gladly).


1.    148 kg. Pantanal, South of Brazil (Cavalcanti, Pers. Comm., 2012).

Originally, this record came from a video, here is the link:

The male looks not gorged, although with a little stomach content (138 kg empty?) When I track the source, I emailed to Dr Sandra Cavalcanti and here is her answer:


So, this male was indeed of 148 kg and constitutes a real scientific record.


2.    130 kg. Porto Primavera, South of Brazil (Morato et al., 2001).

Here is the image of the document:



Here is the link of the document, in Spanish:


Dr Peter Crawshaw Jr. Corroborate to me that this male came from Proto Primavera and even send me some body measurements of the specimen during its first capture. All these specimens have feed at least 24 hours before its capture.


3.    104 kg. Emas NP, Center of Brazil. (Jaguar Conservation Fund, 2009).

Here are the sources:


The picture of the specimen:



Just a correction, the male was captured in 2009, not in 2004. These sources corroborate the correct date.


Now I have found another large male, also from Emas NP that weighed 105 kg, here is the link of the document:


So, the correct record for Emas NP in Brazil most be like this:

* 105 kg. Emas NP, Center of Brazil. (Soares et al., 2006).


Check that this male was older in date than the previous one. This is what I have told to Chui, in any day, a “new” record could rise and change this full list.


4.    63.6 kg. Texas, USA. (Schmidly & Davis, 2004).

Here is the image of the book:



Although the source states a top figure of 90 kg, it sounds like an estimation. The sample is very small, but at least suggestive.


5.    53.5 kg. Arizona, USA. (Arizona Game and Fish Department, 2009).

Here is the source:

At least, in this case, the record is somewhat unreliable as this is the only male weighed in the area and is not other records from for comparison.


6.    121 kg. Los Llanos, Venezuela. (Hoogesteijn & Mondolfi, 1993; original).

7.    119 kg. Pantanal, South of Brazil. (De Almeida, 1993; original).

8.    96 kg. Amazon. (Sunquist & Sunquist, 2002; second hand).

9.    66 kg. Belize, Central America. (Rabinowitz & Nottingham, 1996; original).

10. 37 kg. Peru. (Hoogesteijn & Mondolfi, 1996; Sunquist & Sunquist, 2002; both second hand sources).

Heres is the image that contains all this 5 records:



This are the sources that I used for the list, however, there are other records from Venezuela and Brazil, but has not been corroborated or had they stomach full of beef.


This account is very interesting:


While jaguars in some parts of the country, such as Amazonas or the basin of the Caura River, seem to be rather small, with the usual male weight not exceeding 80kg, several reports from regions such as Los Llanos describe the hunting of extremely large jaguars (Hoogesteijn and Mondolfi, 1996; authors’ unpublished data). According to reports of workers at Hato Piñero, one jaguar male killed there weighed 159kg and another, recently killed in the vicinity, weighed 130kg. Accordingly to a worker at Hato Socorro, a jaguar killed on the border of Cojedes and Portuguesa states weighed 180kg. Large jaguars are also believed to live in the area of Lake Maracaibo. Although these reports cannot be verified, it seems that in parts of Venezuela where jaguars prey on cattle, their body mass is generally higher.




These figures show claims of the same weight than those reported by Sasha Siemel in El Pantanal. However, I can’t believe in a jaguar of 180 kg, it is too extreme and would need verification.


Apart from this data, there is the sample showed here by peter from Paraguay, there the heaviest male weighed 106 kg. Surprisely, the heaviest puma of the same location weighed 108 kg. Now we will need to read the original document to see if these specimens were baited, gorged or empty belly.



From a sample of 5 specimens (two males only) captured in Hato Piñero, Venezuela, the heaviest was of 93 kg. However, something in the body measurements don’t seems right. Well, here is the document:



Maybe chui, peter, Kingt and other posters, could put more data on other areas in order to enlarge the present data and the list of Sunquist & Sunquist (2002).

Last Edited By: GuateGojira Dec 24 13 7:52 AM. Edited 1 time.

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#6 [url]

Dec 24 13 5:50 AM

Heaviest jaguars on record

I have corrected my list of the heaviest jaguars. Maybe someone could add more data, but for the moment, this is what I have found.


Just a correction, according with Google books, the edition of De Almeida book that I have used is of 1990, not 1993.


Records of the heaviest jaguars (Panthera onca) from scientific sources and reliable hunting literature:

·         Brazil:

o    148 kg. Pantanal, South of Brazil [Radiocollared by scientists in the field] (Cavalcanti, Pers. Comm., 2012).

o    130 kg. Porto Primavera, South of Brazil (Morato et al., 2001).

o    119 kg. Pantanal, South of Brazil. (De Almeida, 1990; Sunquist & Sunquist, 2002).

o    105 kg. Emas NP, Center of Brazil. (Soares et al., 2006).

·         Venezuela:

o    121 kg. Los Llanos, Venezuela. (Hoogesteijn & Mondolfi, 1993; Sunquist & Sunquist, 2002).

o    93 kg. Hato Piñero, Venezuela. (Scognamillo et al., 2003).

·         Paraguay: 106 kg. Chaco paraguayo (McBride, 2007).

·         Amazonas: 96 kg. No specific location (Sunquist & Sunquist, 2002).

·         Bolivia: 93 kg. Guapore river (De Almeida, 1990).

·         Central America: 66 kg. Belize (Rabinowitz & Nottingham, 1996; Sunquist & Sunquist, 2002).

·         United States of America:

o    63.6 kg. Texas (Schmidly & Davis, 2004).

o    53.5 kg. Arizona (Arizona Game and Fish Department, 2009).

·         Peru: 37 kg. Peruvian forest (Hoogesteijn & Mondolfi, 1996; Sunquist & Sunquist, 2002).


* Note: Some of the records belong to small samples and offers only suggestive results. There are reports in Brazil and Venezuela of jaguars of up to 145-160 kg in literature (Guggisberg, 1975; Hoogesteijn & Mondolfi, 1993), but this may represent gorged specimens (De Almeida, 1990) and in some cases, it is difficult to confirm those figures.

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#7 [url]

Dec 24 13 5:54 AM

Picture of the heaviest jaguar on scientific record

In the tradition of having all the available data about the heaviest cats recorded by scientists, pictures are a basic fact that we most have.


So, just like we have the picture of the heaviest tiger (Nepalese "Sauraha" male), lion (Etosha male) and leopard (Namibia male), here it is the picture of the heaviest jaguar in scientific records:



The text is in Spanish and translated to English is this:

“Photo No. 7: The weight of the jaguar varies greatly according with the geographical region from the Central Americans of 50 kg to specimens like this of 148 kg captured for studies with radio-collar in the northern Pantanal.”


Is important to mention that its belly is practically flat, which suggest that contrary to my previous statements, it seems that this huge jaguar was “empty belly”, not like the 159 kg jaguar of Sasha Siemel. I will email to Dr Cavalcanti again, maybe she have the body measurements of this great cat.


Here is the document (also in Spanish):


To be sincere, I am not 100% if this is the same male captured by Dr Cavalcanti in the video, but it looks of the same size, they are of the same area and I really doubt that they were two 148 kg jaguars in records by now. So, this is the ONE.

Ps. In the video, we can see that the
handkerchief on the eyes of the jaguar is the same than that of the video, so now I am 100% sure that this is the record jaguar of 148 kg. Rest my case. smiley: smile

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#8 [url]

Dec 24 13 5:55 AM

For the record and future tables, here is the figure of another male jaguar of 130 kg captured in 1998:



It seems that there are several Southern Brazil jaguars that reached this figure. Sadly, it is not stated if it had or not some stomach content.

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#9 [url]

Dec 24 13 5:58 AM

On the skulls of the jaguar - By Chi

In addition to the  data on Venezuelan jaguar skulls from Mondolfi and Hoojensteijn I posted on the page 1 of this thread, here are measurements of jaguar skulls from Pocock's great paper, "The races of jaguar".




From the book, "Jaguar Hunting in the Matto Grosso and Bolivia", skulls of all the jaguars taken by clients of Tony Alemida, the renowned professional hunter. All are from the Pantanal except numbers 40, 48, 51, and 52 which were adult males from other regions. In the male section, numbers 43, 49, 50, 53, 54, 55, 56 and 57 were subadults and all others were adult (age 4 years or above).



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#10 [url]

Dec 24 13 5:59 AM

Jaguar Kills Caiman in "Spectacular" Attack

On August 25, photographer Paul Donahue got a call: A large male jaguar had been spotted on the hunt in central Brazil's Tres Irmãos River. Here is the event:














Source of the pictures and the full article from Nat Geo here:


There is no doubt about the power of the great jaguar, the apex and most formidable predator in all America. smiley: grin

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#11 [url]

Jan 1 14 3:07 AM

Largest Jaguar ever shot?

From the Ainsworth's magazine (1847). It mentions a hunt taken in western coast of mexico. You may wonder why it is called a tiger, but in those days a jaguar was often called a tiger of the Americas. It is also clearly mentioned on page 336 in the book that the animal had spots, not stripes. The animal weighed 435 pounds and is said as the largest shot in the region.

You can choose to believe this record or not. But I found it interesting.



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#12 [url]

Jan 11 14 3:24 AM

Although the history is interesting, a jaguar of 435 lb (197.3 kg) is out of question. The maximum is of 159 kg, according with Sasha Siemel, but even this record is questionable.


De Almeida (1990) mentioned this type of exaggerations and even mentioned cases of hunters from Africa that said that they lions weighed up to 400 kg and them leopards up to 200 kg! Wth


These are just hunter-tales, and should be treated as such.


Even then, is interesting to know about these accounts and enlarge of knowledge of other cultures about the jaguar, in this case, Mexico.

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