It is possible the former room mates and visitors did not treat the dog well. They might have yelled, hit, kicked, thrown stuff, etc. at him.
Try one thing at a time, like the friend: give him some treats when he comes in so he can give them to Flip..BEAGLES will do almost anything for food... put them in the mailbox or in a bag on the door, so the friend has them when he comes in. Greeting at the door, should have Flip sit and then open the door. Give him praise when he is quiet.
Friend: squat down and put a piece of food on the floor and have a second piece in his hand. Flip should then be allowed to go get it. If he barks at friend then you need to give Flip a poke (with your hand) in the side to get his attention and he should stop. When Flip stops, friend can throw lightly the treat to just infront of Flip. Then place one on the floor in front of friend. When Flip eats that one, friend can open palm with the next treat. Talking softly to Flip, friend can feed him a few more treats to win his trust. If friend is afraid of Flip then you need a different approach.
Try one thing at a time, like the friend: give him some treats when he comes in so he can give them to Flip..BEAGLES will do almost anything for food... put them in the mailbox or in a bag on the door, so the friend has them when he comes in. Greeting at the door, should have Flip sit and then open the door. Give him praise when he is quiet.
Friend: squat down and put a piece of food on the floor and have a second piece in his hand. Flip should then be allowed to go get it. If he barks at friend then you need to give Flip a poke (with your hand) in the side to get his attention and he should stop. When Flip stops, friend can throw lightly the treat to just infront of Flip. Then place one on the floor in front of friend. When Flip eats that one, friend can open palm with the next treat. Talking softly to Flip, friend can feed him a few more treats to win his trust. If friend is afraid of Flip then you need a different approach.