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Cat's teeth age determation
2-4 weeks : Deciduous (baby) incisors coming in
3-4 weeks: Deciduous (baby) canine coming in
4-6 weeks: Deciduous (baby) premolar teeth coming in
8 weeks: All deciduous (baby teeth) are in
3.5-4 months: Permanent incisors coming in
4-5 months: Permanent canine, molar, premolar coming in
5-7 months: All permanent teeth in by 6 months
1 year: Teeth white and clean
1-2 years: Teeth may appear dull with some tartar build up (yellowing) on back teeth
3-5 years: Teeth show more tartar build up (on all teeth) and some tooth wear
5-10 years: Teeth show increase wear and disease, pigment visible on gums
10-15 years: Teeth are worn and show heavy tartar build up; some teeth may be missing
Dog's teeth age determination
2-4 weeks: No noticeable tooth growth
3-4 weeks: Deciduous (baby) canines coming in
4-6 weeks: Deciduous (baby) incisors and premolar coming in
8 weeks: All deciduous (baby) teeth are in
3.5-4 months: No noticeable permanent teeth
4-5 months: Permanent incisors coming in, some growth of premolars and molars
5-7 months: Permanent canines, premolar, and molars coming in; all teeth in by 7 months
1 year: Teeth white and clean
1-2 years: Teeth may appear dull with some tartar build-up (yellowing) on back teeth
3-5 years: Teeth some more tartar build up(on all teeth) and some tooth wear
5-10 years: Teeth show increased wear and disease
10-15 years: Teeth are worn and show heavy tartar build-up; some teeth may be missing
Sources: Animal sheltering "How to" series, 1996 The Human Society of United States.
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