My dog would do it. She's evil. She has murdered many small animals and then uses their corpses as toys before eating parts of them and leaving the rest to rot.
She once found a nest of baby bunnies in the yard and slurped them all up like spaghetti as we watched in horror.
My boy caught a mouse once. He really worked for it too, he had little bits of moss stuck to his nose when I found him. When I told him it was time to go inside he just shook his head to kill it and headed for the door like it would just be okay to bring it in lol. Had to pry it out of his mouth.