Xenomorph Dog

The Xenomorph dog is a domesticated version of the Xenomorph, native to Planet 51. They are kept as pets by the Planet 51 natives.

Biology
It is much smaller than the common Xenomorph and walks on all fours. Another difference is the presence of dog-like ears and the fact it lacks the inner-mouth. A strange tradeoff it possess for acidic blood is acidic urine, as shown by one of these "dogs" peeing on a lamppost and melting it.