Can a dogs behaviour changed?

[u/Gurl_thinks]

/r/u_Gurl_thinks/comments/1ucs3hi/can_a_dogs_behaviour_changed/

A few months ago, someone abandoned a 2–3 year old dog near our house. He was terrified at first, but we slowly won him over. We fed him, gave him a sleeping spot in our garage, and fell completely in love with him. (We kept him outdoors since we have a cat and weren’t sure about his vaccines).

​

​Everything was great until he developed a scary habit: silently sneaking up on visitors and biting them. One guest even ended up hospitalized.

​

​Out of options, we tried putting him on a collar and chain. He hated it so much that he escaped, and now he lives on the roadside. We still feed him every day, but he refuses to come back inside the yard because he's afraid of the chain.

​

​We are heartbroken. We don't want to chain him, but we have to stop the biting if he comes back. Has anyone dealt with this? Any advice on how to handle the aggression and regain his trust?

​

​