Pounce

Pounce: Pounce (noun) shares its etymology with punch, as in the ubiquitous 3-hole punch used by school children. The sharp, cutting tool, pounce (noun), was metaphorically applied to the claw or talons of carnivorous birds. Eventually, the term became applied to the act of hunting by these bird, and ultimately the common use of pounce (verb) today, as in the cat pounced on the mouse.

Those big claws are called pounces. The ones at the back are called talons - the ones they carry the prey off with.

A Book for Today: Unseen Academicals by Terry Pratchett