10 Facts About Puppies Even Dog People Don’t Know

2. Sensory

Like humans, puppies are born without teeth. However, they can’t hear, see or smell, either. Puppies don’t open their eyes or begin to hear until they’re 1 to 2 weeks old, according to the VCA, and they can’t smell until about three weeks post birth. Until then, it’s very important for the mini-puppies to stay close to mom and their siblings to eat and grow properly.

More:18 Super-adorable Puppy Photos That Will Make Your Heart Happy

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