ON THE EDGE OF EXTINCTION - C - THE JAGUAR (Panthera onca)

[Pckts]

(10-12-2019, 02:49 AM)lionjaguar Wrote:

(10-12-2019, 02:33 AM)Pckts Wrote:

(10-12-2019, 02:09 AM)lionjaguar Wrote:

(10-12-2019, 01:40 AM)Pckts Wrote:

(10-12-2019, 12:41 AM)lionjaguar Wrote:

(06-10-2018, 02:45 AM)epaiva Wrote: @peter
Today I attended a SYMPOSIUM named  LOS FELINOS DE VENEZUELA with the best researchers of Cats in the country  with a great surprise, Dr Wlodzimierz Jedrzejewski who has been doing a research of Jaguars and Pumas for more than 9 years found out a Coalition of two big adult males in Hato Pinero in  the Venezuelan Llanos they have already killed 3 males and have a huge territory with 3 females for them, they are mating  without any fight between them, Jaguars are supossed to be solitary cats. He said that he estimates that the largest Jaguar in Pinero weights at least 120 kilograms. Hato Pinero is a big Ranch located in Estado Cojedes, Venezuela
Credits to Jan Dunge and Desiree Starke

*This image is copyright of its original author

*This image is copyright of its original author

That's fascinating. Are they living like lions? I heard a story about two old male jaguars in the Brazilian Pantanal combine forces to defend their territories against younger males. I read jaguars are less territorial against other jaguars are intruding their territory unless they invade the core area. That's probably why jaguars are doing better than most other big cats despite they are not adaptable compared to cougar.

Not sure about the 2 older ones but as of now you have 2 brothers who are still patrolling and hunting together but they're still young *3 ish* so they may not stay together much longer.
Jaguars are extremely aggressive to one another but not so much territorial since the Pantanal has constantly changing landscapes. When you see sandbars or trees where Jaguars hunt one year, those exact same spots may be washed away the next year once the floods come and go.
An example of how hard it is for Jags to grow up in the pantanal is that you will rarely see cubs there, there's too many huge males and they kill them off, you also rarely see young Jags who were born there come back, most Jaguars who come to the meeting of the 2 rivers arent known to the guides and it's usually huge dominate males. It's like they know that when they come back to these prestine hunting grounds they must be the best of the best.

I really don't know if jaguars are extremely aggressive. Pantanal probably has dense jaguar population, and that's probably why jaguars are territorial then. I heard it from other guide that jaguars are not aggressive compared to how Mapogo lions are killing others for territory. It would be different if prey is low in their habitats. I have never heard male jaguars are killing rival male's cubs. Is there any source to prove it?

You're asking 2 different questions...
Are they as aggressive as one of the most infamous lion coalitions in modern history?
No, probably not

Are they extremely aggressive to one another?
Yes, absolutely and I can give you example after example of them doing so. 
Again, the pantanal isn't your normal open plains setting, you cannot view them easily, floods come and wash away everything, in fact, most of the terrain may look like there is tall grass with dry land beneath it but really it's just water everywhere. You drive past in the boat and all the tall grass which you thought was land just rocks with the wakes of the water, it's very cool to see.
So that being said, you dont have a chance to view what happens to these cats for most of the year.
But there is a reason why the Pantanal has a revolving door of dominate males which never stick around for long.

Also, caiman in los llanos are a smaller sub species and they arent the density like they are in the Panatanl.
Hunting is much more prevalent in los llanos as well. No Jaguar territory on earth is going to be a more prime setting than the Panatanl, but obviously los llanos is close since they have very large cats as well.

Lastly, which guides are you speaking with?
I may know some

I am talking about jaguars from 100 years ago too. Jaguars in Pantanal are probably the biggest jaguars. How about if we are comparing to jaguars of Los Llanos 100 years ago. There are not much size difference between the yacare caiman and spectacled caiman. It won't affect body size of predators consuming them.
I read fb post from guide name Paulo Barreiros.

I'm not sure about 100 years ago, I can only speak on the last 30-50

Paulo is a good friend of mine, he was my tour guide. I can guarantee he knows good and well how aggressive Jaguars are and will be happy to let you know as well.
Just ask him about Marley one day, Paulo is the one who's filmed and seen Marley fight numerous times including the one where marley and another monster male roll down the hill fighting then Marley runs for his life into the water to escape.
Also, Paulo will almost guarantee that no Jaguar is as large as the Pantanal Jags as well. Reply