Of all the big cats, the jaguar remains the least studied. While some information comes from the wild, most of what is known about jaguars has been learned from captive animals. Wild animals are difficult to study because they are extremely rare. Jaguars range mainly in Mexico, Central, and South America. Some sparse sites have been recorded in Texas, Arizona, southern California, and New Mexico. They live mainly in forests and swamplands. Jaguars are excellent swimmers, and are the most water loving of the cats.