New breeds are added to the game frequently and include breeds from all over the world. New breeds are released on Saturdays and are available via custom coins. The Thursday after at 6:00 PM EST/game time the breed releases into the foundation store for gold and platinum subscribers. The Saturday after at 12:00 PM EST/gametime, the breed is released in the foundation store for everyone.
We do take requests for new breeds via breed-voting or breed-suggestions on our Discord.