crabs aren't mammals, they don't produce milk. that's a requirement for being classified as a mammal
Squidboards
TOD13
Yeenom
Mr Grizz's definition of a mammal is having hair, not milk production, unless he was up to even more freaky stuff during the story mode. Crabs have hair, a lot of sea creatures actually have hair but crabs are one of the only hair-having sea creatures we see in the series.
Catloafman
grizz really saw the ice cream fest and thought wait this ice cream isn't real and decided to create ice cream again