Do Kittens Lose Teeth. Your kitten will normally have lost her deciduous or baby teeth by 7 months of age. Kittens start losing their baby teeth around 9 weeks of age and from that time until their adult teeth are fully grown in at 5 to 6 months you can count on lots of chewing action.

Around three weeks of age their kitten teeth will begin to erupt. She has 26 baby teeth that are replaced by 30 permanent or adult teeth. At around six months of age most cats should have lost their baby teeth to make way for their adult teeth.
The new teeth that are beginning to poke through will replace the baby teeth and will be the final set of teeth your cat will have so it s particularly important to take care of them.
As these teeth grow the mother may experience discomfort when nursing and start weaning the kittens. It s important to know what s happening during teething as baby teeth don t always fall out. Kittens are born without visible teeth. This is when the majority of cat teething issues begin.