Big Lil pup
Join Date: Mar 2015
Location: Portland, OR
Dogs Name: Foxfire's The Real McCoy (McCoy)
Titles: Pet of the Year
Dogs Age: DOB 9/12/14
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10 months would be pretty young for a dilute to start losing hair in a large way.
Question: I think I see bumps or pustules on his rear leg.
Has he seen his vet about this? In a 10 month old puppy (Yes... He is still a puppy). likely causes could be Demodectic mange or a simple Staph infection. Your vet should easily be able to diagnose either. Both are generally readily treatable.
Honestly most of my boys as pups have either had one or both, as they are quite susceptible to either until their immune systems have full kicked in.
If he has not seen a vet, I would make an appointment.
Our resident expert on dilutes is member dobebug. She has a senior (13+ y0) fawn male who happens to be my youngest's Grandsire. Perhaps she will chime in.
So, to reiterate, at his age, I would look to more common puppy skin issues as opposed to assuming a Color Dilute Alopecia problem.
Edit to say: Well... I guess melbrod already addressed the issue!
Geez mel! LOL