Here are some of my suggestions!
Tails :
- nub/stub (also furred version too?)
- hanging nub/stub (also furred version too?)
Ears :
- short ears
Markings :
- a premade saddle (like on a GSD?)
- brindle
- a heart-shaped patch somewhere
- piebald/patches
- points (like a Doberman or Rottweiler)
Expressions :
- afraid
- shocked
- ashamed
- guilty
Accessories :
- attachable/clip-on wings or smth similar
- harness
- sled-dog harness
- muzzle
- bandage (and band-aid + various places and versions?)
Summer Month: 1 
Day 
