So if a bitch had a litter in May then the likelyhood of her having another litter and then ready for sale now would be almost impossible :-)My bitch had pups end of April, came into season again as usual in September (5 months), had she been mated (which of course she wasn't!!) pups would not have been DUE until November, so yes, pups born May and new ones ready now (October) would be impossible unless the bitch had seasons just 3 months apart and was mated when her pups were a month old.