2. THEIR TERRITORY IS SHRINKINGJaguars used to be found from south-west USA, throughout South America to almost the far north in Argentina. Now, they’ve been virtually eliminated from half of their historic range. The jaguars’ stronghold is in Brazil – it may hold around half of the estimated 170,000 wild jaguars. Most of these big cats are found in the Amazon rainforest and the Pantanal, the largest tropical wetland.