
Hi Dame, there are so many other things that need to be ideal, apart from age. Most will say not before a bitches 3rd season, but it also depends upon the breed too, body size, shape and mental maturity. Things like temprament, conformation to the breed standard, proven by consistently good results at shows or working events appropriate to the breed.
There are loads of things to take into account when deciding whether or not to breed a litter.
I will say though that 8 years is way too old for a first litter, but there are circumstances when it might be OK to have a last litter from an important bitch slightly over the 8 year mark.You would have to satisfy the Kennel Club of the circumstances well in advance though or the litter could not be registered.
Dawn R.