Dog Man Unleashed

ABOUT
Dog man unleashed starts out as all of the cops forgetting about Chief's birthday and Dog man goes to the pet store and gets him a a present(a fish). Two other cops got him Supa Brain Dots, which later fall into Flippy's bowl (Flippy is what Chief named the fish) then Flippy gets a disguise.

The book came out in December of 2016 by Dav Pilkey.

TRIVIA

 * The original cover was going to be purple according to a sneak peak in book 1
 * It shows in book 1 that the skeleton dinosaur's eyes are black not red