Tags:
animal genitalia
animal penis
anthro
arfventurer
ass
balls
big balls
big penis
blush
canid
canine
canis
clothing
colored
digital media (artwork)
domestic dog
dragon
duo
equid
equine
equine genitalia
equine penis
erection
expansion
eyewear
from behind position
fur
genitals
glasses
grabbing from behind
growth
growth lines
growth sequence
hair
horn
horse
huge balls
huge cock
hybrid
hyper
hyper balls
hyper genitalia
hyper penis
imageboard
knot
looking pleasured
lucky (arfventurer)
male
male/male
mammal
nude
penis
Rule34
sex
shrinking
simple background
size difference
size transformation
smile
spud
swelling
tail
thick thighs
transformation
voidpotato