There is a world somewhere between reality and fiction. Although ignored by many, it is very real and so are those living in it. This forum is about the natural world. Here, wild animals will be heard and respected. The forum offers a glimpse into an unknown world as well as a room with a view on the present and the future. Anyone able to speak on behalf of those living in the emerald forest and the deep blue sea is invited to join.
04-08-2020, 02:05 AM( This post was last modified: 04-08-2020, 02:43 AM by Pckts )
(04-08-2020, 01:39 AM)OncaAtrox Wrote:
(04-07-2020, 08:51 PM)peter Wrote: DARK JAGUAR
Interesting contributions from start to finish. Many thanks on behalf of all! You almost singlehandedly revived the thread.
It's remarkable that the difference in size between regions is so pronounced in jaguars. Pantanal jaguars more or less compare to Sumatran tigers, whereas those in Belize are smaller than leopards of large subspecies.
There was quite a bit of information about Surinam jaguars in the former Zoological Museum of Amsterdam (ZMA). The collection of the ZMA was moved to the natural history museum of Leiden (Naturalis) some years ago. About 15 years ago, I measured a lot of skulls in the former ZMA. I also found relaible information about the length and weight of a number of jaguars. Based on what I have, I'd say there's, sizewise, little to choose between Surinam and Belize.
There are some Mesoamerican jaguars that have reached weights of over 90 kg registered which is at par with the largest leopards. On average Iranian leopards weight 62 kg which isn't too far away from the 57 kg for Belize jaguars. We don't have much data on rainforests leopards to make an assessment, but from what I've seen their weights seem to overlap with Mesoamerican jaguars as well.
*This image is copyright of its original author
Largest Skull shown
10.3'' x 6.4'' Total Score 16.7''
For Comparison
A skull of that size in Almeidas book would be on the bottom tier (2nd smallest recorded of all Jaguars,) one with almost identical measurements was hunted by Butch White
With a score of 9 4/16'' x 6.5'' Total Score of 16.3'' and a weight of 67kg
The next one up from that has a score of 17.01 and weight of 83kg
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