I like the pet system in this game. It's unfortunate, though, that with so many exotic creatures in the game, we are mostly limited to wilt-leaf bats and jumping grass. These show up in every zone regardless of if they exist in that zone or not. I had to egg farm for 3 days to get a snow ferret, which apparently only drop in Ystra, along with wilt-leaf bats, which don't exist in that area. It would be IMPOSSIBLE to get a holy egg with this creature.
This is a suggestion to make pets more exciting and gratifying.
Suggestion 1: Add the ability to merge the appearance of one pet onto another. Just the appearance. This could be done using an aggregator similar to the one used for armor and weapons.
Suggestion 2: Offer more transformation potions in the shop. Here are some that I would buy:
Snow Ferret (scale down)
Jonesy
Snow Fox
Forest Fox
Harpy (scale down)
Ice Witch (scale down)
Unicorn (scale down)
What does "scale down" mean? Big pets get in the way when trying to click target something. They should be smaller than the player. Either scale them down or give the player the ability to choose a scale.