
I think the problem lies with different local authorities applying different rules.
Also even with things already mentioned by Hoggie, spac3, heating, bedding etc.
The needs of different breeds and individual dogs varies so much.
For example my breed are most comfortable between 5'C and 20'C, prefering the lower.
My puppies by a week old are moving away fro sources of heat, I only use a small heatpad, and never have room temp over 22'C. I had a litter in acute distress one October in my bedroom that got sun at sunset!
I had to move these pups to a tiled kitchen floor with just paper, with backdoor open at 10 days.
Now all the breeding books tell you to keep whelping area hot.
It's being needlessly tied up in red tape, and having your freedom to manage things to suit your circumstances as you see fit from your knowledge and experience.
The rule makers rarely have any practcal breeding experience.
Who do they consult. If vets; well we all know how wildly inappropriate their breeding management advice can be.
I bred my last litter 2 years ago. If I manage to get a bitch pup/s from litters with my breeding this year it will be another 3 years before I might breed again. I have to admit as ny new LA are one of those that require a licence if sales are iver £1000 in a year, I am realky put off and may just not breed.
My breed in the UK is already dying on it's feet, with so few breeders left with just 37 (just 7 litters) registered in 2019.