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   Step 1: Pick a calm moment, like after a walk. Sit next to your puppy and start with a treat.

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   Step 2: Gently hold the top of the muzzle with one hand and lift the lip on one side with the other thumb. Look at the upper canine (the long, pointy tooth). If they struggle, stiffen, growl or try to bite, stop: try again later, practice with the handling guide first, or ask your vet to check.

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   Step 3: Look for two teeth in the same spot. A retained baby tooth is thinner and sharper; the adult tooth is wider and blunter. On top, the adult canine comes in in front of the baby one; on the bottom, on the tongue side.

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   Step 4: Pull down the lower lip and check the bottom canines. Then part the lips at the front and look at the incisors (the small front teeth).

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   Step 5: Repeat on the other side. Finish with a treat, and if anything looks off, snap a photo to show your vet.