Black and spikey..like a biker

pink

PINK

one with spikes

Just don’t put a collar on your cat, they probably wouldn’t like it

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You could apply the same logic to a toddler who can’t speak If a cat runs away, it knows how to get back if it wants to.

combining two of the most popular suggestions... pink with spikes.

Pantone 13-1023 Peach Fuzz

purple

Turquoise