Frequency of dog coming into season

[Bambi_1]

I have a 13-month old German Shepherd X, who had her first season at 7 months, the next at 10 months and has just started again. It seems she has a three-month cycle. When she came into season the second time my vet thought it was because she was young and she would settle down to less frequent seasons, but this seems to be a bit too regular to confirm that opinion. Does anyone else know of dogs this happens to? She is otherwise in perfectly good health and since I hope to breed from her in a year or so I don't want to get her spayed. My last dog had her seasons at 9-monthly intervals and all the other dogs I know vary between 6 and 12 months, although a friend told me he does know of dogs who even have monthly seasons. That sounds a bit much for the owner as well as the poor dog!.

[Bambi_1]

Hang on - I put this in Pets - I could swear I did! Apologies to all...