Mustang was bought as puppy by my boyfriend to be his dog. As time went on I was the who would feed him, walk him etc. When we split, Mustang stayed with me and the other animals.

Mustang was also known as houdini or escapee puppy for his ability for getting out of the dog yard from the smallest of places. I would constantly open the back door to find him there.
Mustang got the taste for freedom, one day the fence fell down,he and Mack ( my oldest dog ) went on their first adventure. After that it was a struggle to keep him in the yard and he had a new partner in crime, Sophie (my youngest dog).

Mustang was a smart dog, he was the one who I could get to listen to commands.
I even tought him how to high 5.