When you have two different pets, they are like each other's siblings in a way, and after looking at these cute before-and-after photos of dogs and cats growing up together, you'll have a hard time convincing us otherwise.
Click through the gallery to see pictures of pets who have lived together their whole lives.
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When pet owner Sonja Heriban went to adopt a cat, she found two cats cuddling and decided to adopt them both. To this day, Renley and Lili remain inseparable and insist on cuddling in the bed they have both outgrown!