Jaguars have developed powerful jaws, spotted fur and night sight that help them survive. They also swim well, which is useful in their natural habitat of rain forests and flooded swamp areas.
According to Bioweb.edu, a collaborative website for Wisconsin university faculty, jaguars are "occipital crunchers," meaning the power in their jaws and sheer size of their heads allow them to pierce their prey's skull using their canine teeth. They are the only big cats able to kill prey with just one bite to the back of the head; most other big cats go for the throat.
Their fur sports unique spotted markings called rosettes. They have one or more spots in the center of each rosette, all of which provides camouflage by breaking up their outline. This helps them blend into their surroundings and keep hidden from their prey. According to BigCatRescue.com, a genetic mutation called melanism accounts for black jaguars, which use this adaptation to blend into the shadows.
Jaguars have a mirror-like layer in the back of their eyes that reflects light back through the eyes, allowing them to see in low light. Jaguars utilize this adaptation to hunt at night or in dark forests. Being strong swimmers also means they hunt well in flooded areas.