Is she a purebreed?

Hi, my wife found this 2 year old up for adoption, she doesn't have papers, lady said she is to old to maintain her.

She gave birth around 3 months ago.

All the characteristics of a bernesse seem to be there, maybe she is just in poor shape after giving birth?

We will adopt her regardless.

Also, I have a 2 year old berness boy, any tips on getting them to get along?

Thanks in advance.