In the episode "Diamond Lili" she wears a diamond collar on her neck.

A pampered-looking lapdog trotted at her heels, like a miniaturized Borzoi with a diamond collar on its neck.

In later shows in Paris she was often accompanied on stage by her pet cheetah, Chiquita, who was adorned with a diamond collar.

Mickey Mouse's dog, Pluto, is kidnapped by the Weasels for his "diamond" collar (later found out to be fake).

The Blackbird catches him stealing a diamond collar for Fifi, but after a battle, he is the one handing it over to her.

Of course, the royal dogs were treated like kings, all those diamond collars... It didn't have to mean he knew-- 'Not hungry?'

The perfect diamond collar?

He carries a black cat with a diamond collar.

Brum helps Mrs Celebrity retrieve her puppy's stolen diamond collar.

Zinni is a papillon who got caught when a thief stole her diamond collar.