AN UNBIASED VIEW OF TOON ME A RIDDLE

Q: Without the need of me Thanksgiving and xmas are incomplete, Once i’m around the table All people has a tendency to overeat. What am I?Question: Completely transform the word "CAT" into the phrase "DOG" by changing a person letter at a time, with Just about every phase causing a valid English term.All set to have the gears in the head turning?