FarmVille: New Horses, Pony, Foals, Cows and Calf
In total, there are 8 new animals that can be produced by or as a bonus of growing up your foals and calves.
Note: When the first enhancement occurred last night, all of the new animals were on the Free Gifting page, but were very quickly taken down. The Groovy Cow was only available for a short period of time through Free Gifting. (More details on that to come)