While it's definitely the norm for dogs to have litters of multiple puppies, these two are the first confirmed case of identical dog twins.
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Typically, in utero puppies each have their own placenta, and when multiple puppies share one, the odds of their survival significantly decrease. But these tough little guys are still thriving!
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This adds dogs to the official list of mammals that can have identical twins. The only two other animals on that list? Humans and armadillos.
Congratulations on being double your daily dose of adorable, Romulus and Cullen! What do you think of these awesome twins? Talk to us about it in the comments below, and share with your friends to see what they think!
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