Justice...has teeth! When Kraven the Hunter abducts the teleporting hound Lockjaw at the same time as a local scientist mixed up with A.I.M. goes missing, it's up to Throg the Frog of Thunder, Redwing the Falcon, Chewie the catlike Flerken, Lucky the Pizza Dog, Bats the Ghost Dog and their scrappy new ally, D-Dog to save the day! But there's more to this case than meets the eye, and something infernal lurks in the shadows. Can feathers, fangs and claws stand against one of the deadliest foes in the Marvel Universe? Or will these Pet Avengers be made to suffer their worst nightmares? Prepare yourself for heartbreak, because not everyone is making it out of this one! Collecting MARVEL UNLEASHED #1-4.