The mouse that robs the trap Porky sets out quotes Baby Snooks' line, "I'm only three and a half years old". However, as house mice are adults at an age of fifty days and have a lifespan of two to three years, a three and a half year old mouse would be a geriatric case.
The name of the cabin where Porky is staying is "Uncle Tom's Cabin", which undoubtedly causes problems with modern day censors.