Unsuitable how? I realise the sleeping puppy could be the most energetic and just sleepy. I'm trying to understand what you feel unsuitable is?Please read my earlier replies as I have explained this several times. In a litter, the puppies will not all have the same temperament. The breeder will be the only person to be with the pups 24/7 from birth and get to know their individual characters. Using my 2015 litter as an example, I had one buyer who wanted a dog to do scentwork with, competing, maybe training up to be a professional working dog. She obviously needed a pup with pretty high drive -the sort that would get bored (and therefore destructive, noisy etc) living as your average pet. I had another buyer who already had a bitch of the same breed. I met the bitch and she was extremely laid back. I had one pup in the litter that already from early on was more laid back than the rest. I suggested him to the owners of the laid back bitch, as their pup was just going to be a pet and companion. A high drive pup would not have suited their lifestyle OR their other dog. At the same time, this laid back pup would never have suited the buyer wanting to do scentwork -he was too laid back. I had another buyer who wanted to train his pup to be an assistance dog, as the buyer was disabled. He was not able to make the long journey to me, so asked me to pick him a suitable pup. Knowing he'd need a dog that would be happy to work all day, every day, he needed a pup that had the right attitude. He also needed a pup that wasn't over the top -he needed a middle of the road pup. So I selected a pup for him, and he's been working basically since he was old enough to phsyically manage what was needed. I kept the highest drive pup and comparing the two as they are today, I definitely made the right choice.
In my main breed, BYBs advertise their pups as "perfect family pets". People buy them, quickly find they have not bought a Golden Retriever, and the dog ends up in rescue -often at just around 4 months of age. One of my OWN dogs was a rescue (not bred by me, but I bred his mother). He was sold at 8 weeks of age as an ideal pet, very easy to train. The new owner lasted
48 hrs before giving up. He came to me at just under 9 weeks of age -already with separation anxiety.
In my toybreed, some dogs also need to go to competition homes or highly experienced homes. A littermate of my first one (i.e. the first one I ever had, so bought in) was returned to the breeder at 11 weeks as the new owner could not cope with their high energy pup -all 1 ½ kilos of him.