I see this is an older thread but active again. My pup is 8.5 months old and not spayed yet. I will let her go through at least one cycle first.
I have an acquiantance who is a canine rehap vet. Her recommendation for a performance dog was to wait til maturity as the hormones are important for skeletal development and we put a lot of stress on jumping dogs which can cause injury. The risk can be higher in dogs altered too early. That said, she also felt that early spay/neuter was the right answer for the family companion.
I plan on agility with Lydi so will let her go through at least one cycle.
Remy is already spayed, not much you can do now about that and really, if she is your family companion and not destined to go out for agilty or other work that puts stress on the skeleton, I would not worry. I might consider making sure her diet is balanced and she is started on a jont supplement early on.
URO3,UCD Aleshanee Windridge "Kayos" CD,TDX,RE,CGC,HIC,TC
PTE,AG2,AN,URO3,UCD Xtra!Xtra! V TeMar "Havoc" CDX,GN,RE,CGC,HIC,TC,BH
UACH,URO1 Tidmores Rising Star Lydia "Mayhem" CD,BN,AX,OAJ,NF,RE,HT,TC,CGC,
Lucky, Wolf, Max