see which one is happy to see you. —
That would be the bitch.
All the dogs I used to own would learn what the sight and jingle sound of a walking leash meant to them. It was time to go out! Just like people, most dogs have very good memories for negative events; such as a particular person who always yells at them, or treats them with cruelty, or a particular tone of voice you have when it’s time to give them a bath.
The moment I used to put my dogs on a Vet’s exam table, they start trembling, expecting to get a shot after all the obligatory petting. I’ve seen dogs become traumatized by prior events, such as being attacked by other dogs, so the dog in question no longer wants to go down that street, even on a leash with their master.