Rule34.GG

Regular 3 heads
4 arms
after transformation
alkali
anthro
balls
canid demon
canine
cerberus
conjoined
demon
european mythology
futonmania
greek mythology
hellhound
implied transformation
macro
male
mammal
multi arm
multi head
multi limb
mythological canine
mythological creature
mythology
obese
overweight
penis
post-transformation
transformation