There is no pet emoji limit. You can order any number of emojis. There are some pricing package settled according to the app development. Each extra emoji has a cost of 20$.
The number of emojis included in each package are:
Pet Emoji Sticker App (iMessage): 15 emojis
Pet Emoji Keyboard App: 40 emojis
In case you only want to have the emoji, you can order any number you want. You can check our pricing page to see the quantity discounts. https://doggymojis.com/pricing/