Just looked cougar up and I guess that photo might be accurate after all.
Males have an average weight of about 53 to 72 kilograms (115 to 160 pounds). In rare cases, some may reach over 118 kg (260 lb). Female average weight is between 34 and 48 kg (75 and 105 lb). Cougar size is smallest close to the equator, and larger towards the poles.
The head of the cat is round and the ears erect. Its powerful forequarters, neck, and jaw serve to grasp and hold large prey. It has five retractable claws on its forepaws (one a dewclaw) and four on its hind paws. The larger front feet and claws are adaptations to clutching prey.
Cougars can be almost as large as jaguars, but are less muscled and powerful; where their ranges overlap, the cougar tends to be smaller than average. The cougar is on average as heavy as the leopard. Despite its size, it is not typically classified among the "big cats," as it cannot roar, lacking the specialized larynx and hyoid apparatus of Panthera.[18] Like domestic cats, cougars vocalize low-pitched hisses, growls, and purrs, as well as chirps and whistles.