Baby Sinclair is a character from the television show Dinosaurs, which aired from 1991 to 1994. He is a small, green, anthropomorphic dinosaur who is known for his playful and mischievous personality. Baby Sinclair often speaks in a baby-like voice and is famous for his catchphrase, "Not the mama!" which he uses to refer to his father, Earl Sinclair. The show is set in a prehistoric world and follows the daily lives of the Sinclair family, including Earl, Fran Sinclair, and Baby's siblings, Charlene and Robbie. Dinosaurs combines humor with social commentary, addressing various family and societal issues through the lens of a dinosaur family.