New parrot breeds
New parrot breeds in v2.0.0: Golden, White, Black, Rosy-Faced, Dusky, African Grey, Galah, Rainbow
New dog breeds
Six new dog breeds as of v2.0.0: White Terrier, Red Shiba Inu, Beagle, Pug, Border Collie, Boston Terrier
Spawn Eggs
There is a dedicated egg for a named black cat, and there are eggs for the Parrot varieties in 1.12.
Pet Names
Random names for witches' cats!
Calico comparison
Comparison of vanilla calico (left) and Winslow (right)
Swamp Buds
A witch's best friend
Pet sizes
Cats and dogs in intermediate stages between birth and maturity
So Many Cats
There are now multiple possible cat and dog skins. Twelve are backported from 1.14, one is an unused skin from bedrock edition, and the rest are custom skins.
Dye-able Collars
Tamed cats now have collars that can be dyed, like wolves!
Non-random skin
Ocelots and cats keep their skins when tamed!