Dog.
Dog, cat.
Dog, cat, mouse.
Froggie!
Itsy bitsy, teeny weeny little bitty froggie.
Jump, jump, jump, little froggie.
Spiders and flies are scrum-deli-icious.
Ribbit, Ribbit, Ribbit, Ribbit, Ribbit, Ribbit, Ribbit,
Croak.
Actions: Set up a clap/lap-slapping rhythm, and repeat each line after the leader. On the first run-through, do it slowly; with each repetition go faster, until the audience tires.