5 ESSENTIAL ELEMENTS FOR BRAIN TEASERS

Q: My pores and skin is environmentally friendly and slippery, I've four legs and webbed toes, I hop on land and swim underwater, I love bugs and minimal fish to try to eat. What am I?Problem: Renovate the phrase "CAT" in the word "Pet dog" by transforming a person letter at any given time, with Just about every stage causing a valid English phrase