Typically a Maremma will get along with other dogs if they are litter mates, are part of the same pack or live on the same property. A Maremma will tolerate another working dog like a Border Collie if seen regularly working with you and your animals. If introduced at a young age this can work better if not seen to be a threat to their territory or resources. In most cases introducing a Maremma puppy with other dogs is likely to work better then introducing an adult Maremma dog would.