You need to take the dog to the vet ASAP.
If your dog is still peeing on the couch, then you have not trained him/her well enough yet.
WHAT????
A dog can stay without peeing for max of 4 and a half hours
Peeing.
get him used to peeing with the leash on, so he'll get used to it.
yes
The dog is marking it's territory. It's normal for a dog to do that.
By peeing
urine trouble!
shoot it
he's marking his territory
yes