Of the four older pups, Elizabeth is the most tolerant of new arrival, Tessa Maria, often cuddling with her and letting her lie on her as a sort of surrogate mother. I'm thinking Elizabeth has the most mothering instincts of the group of 'four' and seems to think at times Tessa is her baby. The others like to play with her, sometimes a bit roughly, but she definately holds her own with all of them.