Why do cats touch each others' paws?
They touch each others' paws maybe to say 'let's be friends' or something.
Humans walk using their heel and the ball of their foot. Some people walk heel to toe while others walk on the ball of their foot. Cats walk on their toes. In terms of the position of the foot while resting, the human foot is typically level with the ground. Cats sit with their back paws level to the ground but only the toes of their front paws touch the ground when they are sitting.
Cats use their paws for many things. The most well known thing that cats do with their paws is clean themselves. Since they can't reach places like behind their head, they lick their paws and swipe it over the area they want to clean. Cats also use their paws somethimes while playing. Some cats catch, and when they chase something, they often use their paws and mouth to catch it.
Lions have five toes on the front paws and four on the back paws. In between each toe is a claw. The "thumb", though, has a dew claw which is more curved and often is off the ground. (Even domesticated house cats have a dew claw on each "thumb" on their front paws.) The back paws do not have dew claws.
Four. A cat will also have, generally, five toes on each foot, four that touch the ground and one more (the "thumb") a short way up the back of the leg. There is a mutation ("polydactyly") that results in cats with six toes on some or all feet, and the current record-holder for polydactyl cats has, if I recall correctly, two feet with six toes each and two with seven.