Golden Retriever Reunites With Sister After Years Apart-and Instantly Knows Her

Reunited, and it feels so good.

We truly now understand the meaning of that song when we see a Golden Retriever reunite with his sister in a tear-jerking moment that's melting viewers' hearts everywhere.

@thegoldenboyranger

I think they knew Also not me messing with the gate while trying to film and taking forever hahahah #goldenretriever#golden#dogmom#cutedog#dog

original sound - Corina + Ranger

You can tell Ranger, the Golden Retriever, knows he has met this dog before, and she is very important to him.

He can't wait to smell her and then tell his parents about it (and get a belly rub).

Look how well they play together during this sweet reunion.

Related: Gentle Golden Retriever Acts as a Personal Water Taxi for a Flock of Tiny Ducklings

Can Dogs Recognize Siblings After Years Apart?

Though Ranger clearly had familiarity with this dog, was he aware that it was his actual sister and that they shared the same parents?

Research on this subject is somewhat limited, but a few studies have found that dogs can recognize their parents or at least have a familial sense of them, but it depends on the amount of time they were separated.

The most conclusive study was published in the journal Animal Behaviour and cited by ScienceInsights.com, and found that mother dogs separated from their puppies as early as 8 to 12 weeks of age could still identify their offspring two years later.

The Animal Behaviour study, which was conducted by Peter Hepper at Queen's University Belfast, also found that at 4 to 5.5 weeks of age, puppies showed recognition of their siblings as well as their mother, and it was all scent-based.

However, there's no conclusive evidence that dog siblings could recognize each other after a prolonged absence.

However, it does seem like Ranger knows this other Golden Retriever a bit more than a stranger he just met off the street, so maybe very deep down, in his own dog way, he knows this is a special connection.

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This story was originally published May 31, 2026 at 5:20 PM.