How long does it take for a dog’s lost tooth to grow back?
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Expert Answer
If a dog loses a baby tooth during teething, the adult tooth usually grows in about a month. After 4 months of age the baby teeth gradually fall out and adult teeth slowly grow, a process lasting about 4 months, with adult teeth mostly out by 7 months.
During teething, the owner can supplement calcium and prepare chew toys to help the teeth change smoothly. If the dog loses an adult tooth, that tooth will not grow back.