The average female cougar weighs 55kg (121 lbs). The average male adult weighs 68 kg (150 lbs). But some males can grow up to 100kg (220 lbs). A friend of mine was scouting elk in northeastern Oregon when he came across an elk kill. It was an adult cow elk. An adult cow elk is a rather large animal. He attached a game camera to a nearby tree and came back the following day and retrieved the camera. This is what he found on it. Look at the size of that brute! That was easily one of those 220+ lbs male cougars. For perspective, that is an adult cow elk in the foreground of the picture.We have coyotes behind my house every night. I've seen coyotes, wolves, cougars, several species of venomous snakes, skunks, feral hogs, and bobcats. We have alligators and a few jaguars in TX, and bears in other parts of the US. I would be most afraid of the cougars. (Jaguars are VERY rare.) A friend of my father in law heard a commotion outside his rural home. He got outside just in time to see a cougar jumping a 2m+ (7 ft) fence with a 20kg goat in his mouth. This was about 18 years ago, but it stuck with me.