Version Differences

Petz Dogz 2 ("Dogz") and Petz Catz 2 ("Catz") have several small version differences from each other.
== Gameplay Differences ==
The largest difference between Dogz and Catz is the optional Help Marin's (Dogz) / Maria's (Catz) Research quest. In Dogz, the player catches 6 insects for her, and in Catz, they catch 8 fish for her. The Dogz quest is easier to complete because the Catz quest relies on fishing luck to catch each of the desired fish (unconfirmed), as opposed to repeats. The Catz quest also requires catching fish that can be large, the Bonito, Spanish Mackerel, and Sunfish, which can be difficult. However, this quest's pier offers Catz players a new place to catch several rare fish that Dogz players lack, and the Catz fish can be sold for more G than the Dogz insects overall. This quest difference likely explains why the only recorded 100% speedrun for the games uses the Dogz version.
The rewards for this quest also differ across versions. Dogz players can receive either a Silver Butterfly or a Gold Butterfly, while Catz players can receive either a Yuke Butterfly or a Rainbow Butterfly. The Catz reward is slightly better–the Yuke Butterfly can be sold for 150G more than the most valuable Dogz reward, the Silver Butterfly. Further, the Yuke Butterfly will likely be a bit more inconvenient than the Dogz rewards to get otherwise, as the easiest method is to refresh Monolith Isle setup while braving the Vultures to check for it.
Another difference is the fruit required for The Legendary Pattern quest: an Apple for Dogz and Cherries for Catz. Both fruits are found in Whisker Woods, so this difference is minor.
== Cosmetic Differences ==
In Dogz, the player character and friendly characters will be dogs, while they will be cats in Catz. The dog breed used for a character may look very different from the cat breed used for them, which can make characters like Victor look quite different between versions.
In Dogz, the radar function for finding items underground uses the player character's sniffing, while it uses their whiskers in Catz.
The best healing item is the Top Quality Canned Meat in Dogz and the Top Quality Canned Fish in Dogz.
Dogz players bark to stun enemies, while Catz players screech.