lovepassion, when you bought the dog, have you visit the breeder's place and the parents of the dog?

The "hut" you mentioned should be the place the breeder use to keep a lot of dogs and breed them aka puppymill. Dogs are bred without proper care and attention, a lot of buyers just because of the cheap prices. When it comes to pets, quality > price.

Considered this is a lesson. Next time, read up through books or find in the internet regarding the dog you're going to buy. Visit the breeder's place, look at the dog's parents. Bring an experince person with you. It'll help a lot.

MKA cert and vaccination card are not a proof that your dog is healthy. MKA cert is just a cert that show you your dog is pure breed and some informations. But sometimes, a not pure breed dog has MKA cert too because there's too many loopholes when making MKA cert and sellers take this opportunity to gain more profit. As for vaccination card, it just show you the date your pup has the vaccination and when is the next day for it to take again.

This kind of ppl breed dog for money one, they don't care about the dog one. Usually petshops take dogs from them since it's cheap. There's some seller here to act as middleman and that's where the dogs they're selling came from.

Yea, treat him good, sure he'll appreciate all the care you give to him

Some of them, not all