Skip to content

New puppy basics

When do adult teeth fully come in for puppies?

Last updated 23 September 2026 · How we write and check this

Short answer

Most puppies have their complete set of 42 adult teeth by around 6 to 7 months old, though some individual variation exists. If your puppy is past 8 months and you can still see obvious gaps or retained baby teeth, it is worth a dental check at the vet.

A rough month by month picture

Incisors are usually fully in by around 4 to 5 months, canines shortly after, and the back molars and premolars finishing the set by 6 to 7 months, though the exact pace varies between individual puppies.

When to get it checked

A retained baby tooth sitting alongside a fully grown adult tooth past 8 months old can cause crowding and future dental problems if left, so a vet check is worth arranging if you notice this.

What a completed set looks and behaves like

A full adult mouth has 42 teeth compared to a puppy's 28 baby teeth, so the jaw visibly fills out more during this period, and many owners notice their puppy's face shape looking slightly different by around 7 months compared to the rounder, softer look of early puppyhood.

Chewing intensity generally eases once the full set is in, though the habit of chewing itself, now separate from any physical discomfort, often continues as normal dog behavior well into the second year for many breeds. This is worth expecting rather than being surprised by once teething itself has technically finished.

A routine vet check around 6 months, often timed alongside neutering or spaying if you are planning that procedure, is a convenient moment to have the full mouth examined professionally, catching any retained teeth or alignment concerns before they become bigger issues. This same visit is a convenient moment to ask any other questions about your puppy's development so far, from weight gain to general behavior.

Key takeaways

  • The full set of 42 adult teeth is typically complete by 6 to 7 months old.
  • Incisors tend to finish first, with back molars completing the process.
  • A retained baby tooth still visible past 8 months is worth a vet check for possible removal.