Cause two random pets I got from exploring in a row got mutations?? For anyone wondering its the green female Bulbori and the pink-white-green.... horse-whose-species-name-Im-forgetting-I-think-its-Kelpari-but-could-be-wrong? They look so cool ack, especially the fluffy bunny girl <3

How common is this? Am I just extremely lucky? Does this make the pets more valuable?

Fairly common but not that common. You appear to have tamed two rare type sylesties. The fact they have mutations does make them more valuable. From what I have seen the traits that they have aren't very common so they might be slightly more valuable because of that but don't quote me on that.

You can use the advanced search to check how abundant a pet is, and you can also see its worth for how much those pets are priced.

So if you go into the advanced search and narrow it down by using the drop down menus.

For the Qitari with butterfly wings you search:

Species: Qitari
Type: Tamed
Mutation 3: visible - Butterfly Wings (DD)
and then search - you will see there are 444 qitari, and then if you go
for sale: yes - you'll see that there are currently 4 for sale at various prices

For the bulbori you do the same thing:

Species: Bulbori
Type: Tamed
Mutation 2: Visible - Petal Wings (CC)

376 bulbs with petal wings
6 for sale at various prices

Also be aware of tagged themed vs just regular tamed. Unfortunately, rare tamed are not worth an awful lot, but rare tagged-themed are. Legendary or mythical (red and yellow star) tend to also be worth a lot.