Can Dogs Recognize Their Siblings?

DNA may also play a role. Dogs have DNA just like humans do, so it may be in their DNA to never breed with a family member, which means they have the ability to recognize a family member/sibling.

Do sibling dogs recognize each other?

Research suggests that dogs are able to recognize their siblings and their parents later in life as long as they spent the first 16 weeks together. Intuitively, the less time dogs spend with their families as puppies, the less likely it is they'll be able to recognize a family member later on.

Do dogs still remember their siblings?

Dogs may remember their siblings (or rather their smell), but it's not that different from how they would remember any other animal (or person) from their past. If they associate them with safety and comfort they'll be happy to see them.