
Size A:
neck circumference = 8" to 10"
girth circumference = 12" to 15"
Size B:
neck circumference = 10" to 12"
girth circumference = 15" to 18"
Neck: measure around neck where collar would be located.
Girth: measure around body just behind front legs.
Always keep one or two fingers under tape measure to assure safe, comfortable fit.