Easy. just go to the pet store near you. then ask them. don't worry they will tell you.
The dogs usually, open the doors, bark, for where something is, if the blind human, needs to obtain something.The dogs, are trained all this, they're usually labs, or golden retrievers, that do this...
Wolves, foxes, something like that; they mated and they had a dog pup!???
yes im a dog and im blind an death
people duh?