Stripe is an alpha male deathclaw that somehow was modified to be much smaller than normal. He's about the size of a dog, but much more deadly!
Despite his small size, he is quite powerful. Having slightly less HP than the legendary deathclaw and slightly more than a deathclaw alpha male, he may kill players who are caught off guard. However, Stripe will only pursue the player as far as the fountain before retreating back to the doghouse. He also cannot perform the leap attack that other deathclaws can, and due to his small size he can't outrun the player somewhat limiting his threat.
Stripe is a reference to the lead antagonist in the film Gremlins. Gremlins resmeble alpha male deathclaws to a point, thus Stripe is named after the lead gremlin in the film. This is also supported that gremlins had a preference for chicken which would explain the presence of a chicken leg.
Xbox 360 Sometimes, Stripe will not appear, even if you have the Wild Wasteland trait.