By licking the fur and making it wet, the cat can cool itself off in hot weather. Most adult cats weigh from 6 to 12 pounds. The heaviest cat on record weighed 42 pounds. Cats are good climbers, but they are no great shakes at getting down. Their claws are curved the wrong way for going backwards and their legs can't spread like a squirrel's.
Cats have excellent night vision.
One reason is that their eyes are very large for their size. The tapetum reflects more light within the eye. Contrary to popular belief, however, cats cannot see in total darkness. Each of a cat's claws is attached to a bone in the toe. When a cat points its toe, the claw is extended.