If you decide to get an adult dog, be careful when choosing a breed.
Dogs of some breeds never recognize a new owner.
Chow Chow
Chow Chows seem very cute, but they have a rather nasty character.
An adult chow chow will at least ignore its new owner.
Husky
Huskies are generally not aggressive, but they are unlikely to have a good relationship with a new owner.
If a dog of this breed falls into the wrong hands, it may start to behave inappropriately.
A husky would rather run away and live on the streets than with a new owner.
Alabai and Caucasian Shepherd
Very loyal, but also very stubborn and touchy breeds.
The Caucasian will ignore the new owner, and will take revenge on the old one if the opportunity arises. The Alabai will take out his anger on the new owner.
Rottweiler and Pitbull Terrier
They will show aggression towards the new owner. And if the Rottweiler will most likely just run away, then in the case of a pit bull everything can end very badly.