If you're a pet parent, your dream is probably to have you two dog become best friends. Some breeds are known for getting along swimmingly with other dogs, and perhaps your two pups fit that bill.

It’s not unusual for the dogs at Miami-Dade Animal Services (MDAS) to develop attachments to other pups or caregivers.

This article was made possible by the support of Yakult and produced independently by Scientific American’s board of editors. We got our first dog when my oldest son was 10. A friend who was a teacher ...