Without counting prongs and halti's and harnesses...

Cincy has 3- The red one she wears normally, a red buclke for agility and a snowman collar from th dance show last year.

Sadie has 5- her very first, which is now way too small, a blue one, also too small, a yellow one, tha tis very dirty, the oink one she wears and a green buckle collar for agility.

Spot has 2, the green one he wears, and the multi-coloered buckle collar he came with