We're jumping in here a little late in the running..............but Lucky is still in. He fits all 5 clues so far:
- 4

- really

treats (and food in general

)
- it's not his first GE

- has at least one fur-sibling (two actually)


- and lives where it

and

, (and everything in between too

)
Now, if only we knew if your SB was a boy