Suggestion:

1. Fix error pets, example: ghast, silverfish, dragon...
2. Create chest / warehouse por pets. To have multiple pets. As 'mypet npc plugin'.
3. Add particles config pets.
4. Add leves / exp pets.
5. Having multiple pets with you at the same time. Example: 3 baby pigs.
6. Compatibility 1.7.9, 1.8.x