It is annoying. Horris has lost 3 or four when hes gotten out. But he hasnt for a few months so he had the same pink one for awhile. All the others wear them to even though their indoor kinda helps when you can hear them.

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Cats-Decker, Horris, Soda

Dog-Sophie

10 Gallon tank - 2 fantail goldfish.

Rest in Peace Kira (cat)2011