User blog comment:Albertosu/Rate of third zombie form./@comment-24659969-20150706235813

1. You have to unlock said cat. Since you stated you haven't bought it, of course you can not unlock it. However, if you have completed the stage (5% on 1st stage and 100% chance on 2nd harder stage) and obtained the third form, it will be reserved until you bought the cat.

2. The said cat has to be level max to use the third form.