How do I increase my pet limit? Please help!

First you need a blueprint for a stable level 2 plus

100 clay   100 stone

100 wood   and 5,000 silver

Also a pet with 60 constitution in the stats.

For construction always check 'List of Recipes'

http://beastkeeper.com/recipes-list

It is possible to buy the blueprint here: http://beastkeeper.com/static-shop

But in all honesty you can find it for much cheaper in the item trades: http://beastkeeper.com/trade/3

There are some threads in the giveaways that people can ask others for blueprints and schemes,, and some giveaways. Just be polite and don't beg. People are happy to help others! http://beastkeeper.com/threads/15