Crookshanks

Crookshanks
Crookshanks is an adorable little half-kneazle kitty that was bought by Hermione Granger at the Magical Menagerie in her third year as a birthday present. Crookshanks is agreeably one of the smartest Harry Potter animal.

Appearance
He is orange, with long fur. Crookshanks has ginger eyes and is adorable. He has a slightly squashed snout but he is still cute.

Why is he so smart?
HARRY POTTER SPOILERS BELOW:

Crookshanks is smart because he spotted that a mysterious black dog and Ron's pet rat were actually both wizards in their animagus form (Sirius Black and Peter Pettigrew).

P.S.
The author has slightly sugarcoated this page as not to be mean. But this is true.