abstain
access
alarm
alert
allowed
animal
attention
bad
ban
black
button
circle
clean it up
clip art
communication
danger
design element
dog
doggy
forbid
forbidden
fouling
hazard
icon
illegal
illustration
information
label
modern
no
not
not walk
pet
pictogram
poop
prohibited
prohibitive
red
refrain
risk
round
shit
sign
signal
sticker
stop
symbol
trendy
warning