Ah that's a good question, it's always soooo hard to decide what to keep and what to give away.
And never enough stable slots
I have 2 kind of pets, the strong ones that I use most of the time to hunt :
2 normal Cu's 4.4
2 GD 4.4 but each has weaknesses and I'm still looking for the perfect one. Those will go then.
1 Nightmare 3.8 he has almost perfect skills, the stats are nice.
1 Rune Beetle 3.5 he should have better dex and a little bit more of poisoning, so I'm still looking for a better one.
1 Bake Kitsune 4 that is still not bonded.I'll see later if I need to look for a better one or not.
And those I keep because I like having one of each or they are colored. I use them for fun or against very specific mobs that I know they can handle :
2 rare colored Cu's, 3.2 more or less that will never hunt the most dangerous mobs
1 WW 4.4
1 unicorn 3.7
1 fire steed 3.7
And I'm still looking for a good Hiryu and the 4 rare colored cu's I'm missing.
The Cu's are the hardest because I would like them to be at least 3 on the pet calc
With 120 vet that means that I'm able to hunt some with them and keep them alive.
Of course if I'm lucky enough to find a blaze I wont care
I have a second tamer that will take the pets I can't keep for lack of room.
And when I can I give some away.