Lucky is Sonny's pet dog. It is only mentioned in Gassie Passes. Not many details are known of the dog, but it has 3 legs and only 1 eye, which is most likely why its name is "Lucky", as Lucky's lucky to survive.
The only episode Lucky is in, mentioned by Sonny, mentioned the details known about him:
- 3 legs
- 1 eye
- His name