Otter (Lutrinae) Care Manual - Association of Zoos and Aquariums

Association of Zoos and Aquariums 123
Otter (Lutrinae) Care Manual
North American river otter (L. canadensis) pup weights (mother-reared). Data taken from AAZK Zoo Infant
Development Notebook 1994, Institution N, Institution O, Institution P.
Males (N = 9) Females (N = 8)
Age/days Weight (g) Age/days
Weight
(kg)
Age/days Weight (g) Age/days Weight
(kg)
1 110-170 32 0.992-1.03 1 170 32 0.971
2 177-184 33 0.998-1.09 2 177 33 -
3 193-220 34 1.08-1.11 3 198 34 1.01
4 204-241 35 1.11-1.14 4 213 35 1.05-1.15
5 241-276 36 1.13-1.19 5 248 36 1.06
6 249-298 37 1.16-1.18 6 262 37 1.09-1.23
7 266-333 38 1.20-1.25 7 298 38 1.13
8 280-354 39 1.23-1.28 8 333 39 1.15-1.30
9 325-376 40 1.28-1.34 9 347 40 1.23
10 353-404 41 1.35-1.36 10 383 41 1.28
11 364-425 42 1.32-1.41 11 397 42 1.25-1.35
12 398-453 43 1.35-1.39 12 411 43 1.28
13 414-475 44 1.40-1.43 13 439 44 1.35
14 496 45 1.45-1.57 14 454 45 1.39
15 531-539 46 1.52-1.62 15 489 46 1.43
16 499-574 47 1.43-1.62 16 517 47 1.34-1.48
17 595 48 1.59-1.69 17 546 48 1.46-1.60
18 617-624 49 1.59-1.67 18 560 49 1.58
19 624-645 50 1.69-1.79 19 609-685 50 1.62
20 666-680 51 1.62-1.74 20 637 51 1.56
21 687 52 1.67-1.87 21 652 52 1.53
22 765-780 53 1.74-1.88 22 660-730 53 1.62
23 780-808 54 1.74-1.92 23 723 54 1.64
24 810-843 55 1.71-1.96 24 758-850 55 1.66-1.81
25 822-858 56 1.54-1.68 25 720-795 56 -
26 829-872 57 1.71-2.03 26 772 57 1.93
27 850-872 58 1.87-2.10 27 794 58 1.76
28 865-910 59 1.90-2.06 28 815-900 59 1.80
29 907-921 60 1.52-2.12 29 872 60 1.86-1.70
30 935-978 61 1.97-2.15 30 907 61 1.84-2.33
31 971-1000 62 1.96-2.24 31 928-1060 62 1.88