Cougars are a uniquely adapted creature. They are perfectly evolved to live in their natural habitat, from climbing to running to swimming. They are incredible athletes, without needing to go to a gym a single day in their lives. They do get coaching from their mothers for the first 6 months or so of their lives, but they are born with physical characteristics that make them very well suited to living in the wooded hills and plains throughout their range. Those characteristics make them the beautiful and competent apex predators that they are. Here are a few of their physical characteristics that make them into the perfect balanced package of agility and strength - and beauty.
Cougars are excellent climbers. Not only can they simply leap vertically up to 25 feet, they have highly-curved retractable claws that allow them to grip the tree for climbing.
Mountain lion paws are 3" to 5" wide, and they are about as long as wide, so their tracks are described as square or circular. Their front paws are larger than their back paws. Their wide paws probably help them swim, among many other things they are useful for. Mountain lions have been recorded swimming for 15 minutes and more at a time, and they aren't afraid of water at all.
Cougars have very long tails, which help them to balance. Do you notice anything that looks different about this cougar than many of the others we feature on this site? This cougar lives in captivity. You can tell by the fat belly, which you might recognize if you know any older domestic housecats, who tend to develop the same characteristic.
Cougars have relatively flat faces with prominent front-facing eyes. Their eyes allow them to see a single object with both eyes at the same time (that's called stereoscopic vision, and humans have it too). That's very important to depth perception and the ability to stalk prey. You can't see it in this picture, but they also have a special adaptation to their retinas that gives them great night vision.