Doorknob used to bring me gifts of fish heads he found in the garbage. Goober (when he used to have a cat door) frequently caught little birds and other critters and bring them in the house.

Luckily for us, he chose the guest room bathtub to use as his private abattoir. I'd look and there would be some streaks of blood and a couple feathers. Strange thing was I never found feet, beaks or anything else.