[Lovetodream88]

I have maybe a slightly weird question. Has any one noticed a change in the hair on the back of there yorkies between the shoulder blades where you are supposed to put flea and tick meds? Callie's hair is rather grown out right now not like long flowing but she is normally in a short puppy cut but its been over 2 months close to 3 sense she has gotten groomed and shes fluffy. Any way I noticed right about where I put the flea and tick meds she has some very dark like black hair and it seems very coarse and thick. Has anyone else experienced this or heard of it? I haven treated her in maybe a month or two because she was rarely going outside.