Hummingdog

Hummingdogs are a non-sapient species of egg-laying creatures which inhabit Titan. They were discovered in the year 2100 by a Venusian named Slim, who named them after the humming sound they make.

Biology
Hummingdogs are medium-sized creatures with no limbs, which move from one location to another by floating. Despite their name, they don't bear much of a resemblance to dogs, other than their flapping ears which resemble some dog breeds. Their skin appears to be scaly and they are oviparous, known for laying luminous eggs.

Hummingdogs are affectionate, docile creatures with a high fertility rate. Despite being native to an airless world, they can also survive in Earth's atmosphere without problem.

Appearances

 * Space Patrol, "The Glowing Eggs of Titan"