Nothing. After mating, the male dog's penis swells and he's unable to remove it from the female for a while until the swelling goes down. It's completely natural. The dogs know what to do.
Most likely.
Dogs Like/sniff other dog butts to get information about the dog. It is a form of communitcating.
Dogs Get stuck together becasue the males you know what enlarges and disables him to dismount and so a nother male cannot mate with her.
Other dogs butts
Umm, yes, they do have to get 'stuck together', as you put it, unless invitro fertilisation is used (quite rarely).
The dogs will usually stay together for about 5-20 min. just so that the seamen can past through to the female dogs womb.
5-20 min
by kissing your poo and licking dogs
Usually up to 15-20 minutes, the average is about 20
When dogs sniff each others butts it's like when we shake hands. It's a greeting. (Don't go around sniffing people's butts.)
because they want ot at there poopy
dogs butts carry the information