- "I think we found our family pet!"
- ―Maureen McReary
A Family Pet is the third comic in Season 3 of Sibling Rivalries, and is the 23rd comic overall.
The McReary family buy a puppy at the pet store, but the puppy runs away and they must find it.
♥ = character's debut
♠ = character does not speak throughout comic
♣ = character is mentioned only
♦ = character appears in a speaking/non-speaking cameo only
- Patrick McReary
- Francis McReary
- Gerald McReary
- Derrick McReary
- Kate McReary
- Maureen McReary
- Angel Chacon
- Salvador Real
- Spencer The Dog ♥
- With only 5 pages, this is the shortest comic in the entire series. The lowest amount of pages in previous comics was 7.
- This is the comic with the third least amount of characters, with "The McRearys' Halloween Special!" and "Roommates" tying as the second and "Hello, Wisconsin!" being first.
- This is the second comic after "Happy New Year!" that Salvador appears without Eduardo Tena and Claude. ("Dodgeball Mishap")