Chihuahuas growth chart

This chart was taken from The Complete Chihuahua Encyclopedia by Hilary Harmer. This chart can be used to provide an estimate for the weight of your puppy full grown. However, this chart isn't always correct, it is simply meant to be used as a guideline. Other things for estimating a puppy's adult weight should be taken into consideration as well, such as knowing your lines. No puppy's adult weight can be guaranteed, only an estimate can be provided.

Birth 2½ oz. 2¾ oz. 3 oz. 3½ oz. 4 oz. 4¼ oz 4½ oz. 5 oz. 5½ oz.

1 week 3¾ 4 5 5½ 6½ 7 8 9 9½

2 weeks 5 5½ 6½ 7 9 10 11 12½ 13½

3 weeks 6 7 8 9 11 13 14 16 17½

4 weeks 7 8 9½ 11 13 15 17 19½ 21

5 weeks 8 9 11 13 15 17 19½ 22 24

6 weeks 9 11 12½ 15 17½ 20 22 24 27

7 weeks 10 12 14½ 17 19½ 22 24½ 27 30

8 weeks 11 13 16 19 21½ 24 27 29 33

9 weeks 12 15 17½ 20 23 26 29 32 35

10 weeks 13 16 19 22 25 28 31 34 38

11 weeks 14 17 21 24 27 31 34 37 42

12 weeks 15 19 22 26 30 33 37 41 45

13 weeks 16 20 24 28 32 36 40 44 49

14 weeks 17 22 26 30 34 39 43 47 52

15 weeks 19 23 28 32 37 41 46 51 56

16 weeks 20 25 30 34 39 44 49 54 59

17 weeks 21 26 31 36 41 46 51 57 62

18 weeks 22 28 33 37 43 48 54 60 65

19 weeks 23 29 34 39 44 50 56 62 67

20 weeks 24 30 35 41 46 52 58 64 70

21 weeks 25 31 36 42 48 54 60 66 72

22 weeks 25 32 37 43 49 56 62 68 74

23 weeks 26 33 38 44 50 57 64 70 76

24 weeks 26 33 39 45 51 58 65 71 78

25 weeks 27 34 40 46 52 59 66 72 79

26 weeks 27 34 40 47 53 60 67 73 80

18 months-full grown 2 lb. 2½ lb. 3 lb. 3½ lb. 4 lb. 4½ lb. 5 lb. 5 ½ lb. 6 lb.