Here is an idea of a clue board game, but with the 6 main characters all being animals

Female animals
Miss Rabbit, a rabbit version of Ms Scarlett
Mrs Pig, a pig version of Mrs Peacock
Dr Bear, a bear version of Dr Orchid

Male Animals
Mr Raccoon, a raccoon version of Mr Green
Colonel Lion, a lion version of Colonel Mustard
Prof. sheep, a sheep version of Professor Plum