The Chihuahua Weight chart is great to use as a guide to estimate a mature weight of a puppy within a quarter of a pound or so. This table is only a guide, however, because many things can effect the mature weight of a puppy, weight may vary depending on bloodline, genetics, how well the animal is fed, etc. Weight estimates before the age of 8 weeks old are often inaccurate because the puppy is still nursing or being weaned.
Birth 2 ½ oz 2 ¾ oz 3 oz 3 ½ oz 4 oz 4 ¼ oz 4 ½ oz 5 oz 5 ½ oz 1 wk 3 ¾ 4 5 5 ½ 6 ½ 7 8 9 9 ½ 2 wk 5 5 ½ 6 ½ 7 9 10 11 12 ½ 13 ½ 3 wk 6 7 8 9 11 13 14 16 17 ½ 4 wk 7 8 9 ½ 11 13 15 17 19 ½ 21 5 wk 8 9 11 13 15 17 19 ½ 22 24 6 wk 9 11 12 ½ 15 17 ½ 20 22 24 27 7 wk 10 12 14 ½ 17 19 ½ 22 24 ½ 27 30 8 wk 11 13 16 19 21 ½ 24 27 29 33 9 wk 12 15 17 ½ 20 23 26 29 32 35 10 wk 13 16 19 22 25 28 31 34 38 11 wk 14 17 21 24 27 31 34 37 42 12 wk 15 19 22 26 30 33 37 41 45 13 wk 16 20 24 28 32 36 40 44 49 14 wk 17 22 26 30 34 39 43 47 52 15 wk 19 23 28 32 37 41 46 51 56 16 wk 20 25 30 34 39 44 49 54 59 17 wk 21 26 31 36 41 46 51 57 62 18 wk 22 28 33 37 43 48 54 60 65 19 wk 23 29 34 39 44 50 56 62 67 20 wk 24 30 35 41 46 52 58 64 70 21 wk 25 31 36 42 48 54 60 66 72 22 wk 25 32 37 43 49 56 62 68 74 23 wk 26 33 38 44 50 57 64 70 76 24 wk 26 33 39 45 51 58 65 71 78 25 wk 27 34 40 46 52 59 66 72 79 26 wk 27 34 40 47 53 60 67 73 80 18 Months (full Grown 2 Ibs. 2 ½ Ibs, 3 Ibs. 3 ½ Ibs. 4 Ibs. 4 ½ Ibs, 5 Ibs. 5 ½ Ibs. 6 Ibs.
Credits~ The Chihuahua weight chart is Colonel V.D’ Oyly Harmer. The weight chart is from a book called. “The Complete Chihuahua Encyclopedia” by Hilary Harmar, Published in 1972 by the Arco Publishing Company, INC.. New York, NY.