What is the smallest toy dog breed besides a chihuahua? Ok people calm down… I’m not looking into buying them

I was wondering if anyone could tell me where on the internet (U.K only) i could get the smallest possible dog bed for a 6 week old Chihuahua puppy? I have seen them in pet shops and they are tiny but where on the internet could i get one? Please U.K only! Thanks for answering [...]