Rule34.GG

Regular ambiguous gender
anthro
asphyxiation
athletic
bondage
bound
breasts
breath play
canid
canine
cuff (restraint)
death erection
ears down
erection
execution
female
gallows
group
hand on shoulder
handcuffs
hands behind back
hi res
hood
hraath
imminent death
male
mammal
metal cuffs
noose
nude
peril
pivoted ears
restraints
snuff
tail
trio