Slightly more complex than the title suggests as this is my good friend who is/was my go-to dog sitter since I've had my 2.5 year old terrier mix. She adores him and thinks of his house as her own. So, what is the best way to introduce them. Off site? At the house? We want them to be able to be walked together. My dog is highly socialised with a big group of pals that she plays with. She's a typical terrier - she can be wonderful with small puppies that she meets but obviously I don't want to take any chances. TIA for any advice.