Mongoose for either of them.

Shiba inu?

H.. Hyena,,, either of em!

Horses are always a fine choice

I want a Dwarf Femboi. C'mon.

Gazelle and cheetah

Could see a tiger for the female, and ared panda for the male.

jerboa for either, never seen one of those

Spider :3

try to go for a parrot, an eagle, an elephant or a crocodile

Femboy lion who keeps there mane (maney styled)
Panda bear

I'm a tad biased, but I think a red pandaren would look fantastic. =P

To give a few to choose from: Giraffe, Red Panda, Goat, Squirrel, Lynx or Zebra for the curvy muscle girl. And for the femboy I'd say Frog, Deer, Bat, Lion, and some kinda small but colorful bird.

I can see the strong gal be a shark, while the femboy could be a least weasel?

Monkey.

Gerbils?

Honestly anything BUT a hyena or wolf. They are over done and boring.

Domestic cats, Ragdolls or Mainecoons

Axolotl

Capybara

An otter

Hyena and Tiger!

gila monster is pretty underappreciated

ORC

Aye-Aye Boy and a 4 Armed-Honey Bee Girl with an afro.

Shortstack loud mouth beach bum shark femboy. Something aggressive like tiger or bull!

Sergal?

a moth!!!! ovo

For the female, Okapis are pretty rare. A musclegirl elf would turn the usual stereotype on it's head. Armadillos are pretty uncommon too.
Shortstack femboy bear would be like a teddy bear! A monkey would be cute too. Maybe armadillo here instead?
Good luck, sure it'll be hella cute whatever you make!

Possibly a Dolphin or Orca?

Mink

Halo aliens

Geoduck

D&D races! Shortstack femboy Kenku, let's goooo!

Horse. Can always use another horse or two running around causing mischief.

Actually had an idea for a big, sorta feral lapin species XD

Curvy muscle girl I'd say bunny or something exotic, like a lizard
For short stack femboy, chihuahua or pig (like one of those cute little teacup piggies)

I'd like to see a croc

Short stack otter