Table 2.
Provision of different types of environmental enrichment for reptiles in study zoos (%) and G-test results 1
| Dietary | Sensory | Training / behaviour conditioning | Enrichment objects and devices | Social | Structural / habitat design | G-test results: Differences within reptile groups |
|
|---|---|---|---|---|---|---|---|
| Non-venomous snakes (89) | 44% (39) | 42 % (37) | 15% (13) | 46% (41) | 28% (25) | 91% (81) | G: 83.06 P < 0.001 |
| Venomous snakes (27) | 48% (13) | 33% (9) | 19% (5) | 33% (9) | 26% (7) | 74% (20) | G: 17.82 P = 0.003 |
| Turtles (82) | 76% (62) | 27% (22) | 16% (13) | 35% (29) | 48% (39) | 84% (69) | G: 84.38 P < 0.001 |
| Tortoises (96) | 85% (82) | 41% (39) | 28% (27) | 57% (55) | 67% (64) | 87% (84) | G: 76.15 P < 0.001 |
| Crocodilians (66) | 70% (46) | 32% (21) | 58% (38) | 26% (17) | 29% (19) | 65% (43) | G: 43.54 P < 0.001 |
| Monitor lizards (47) | 90% (42) | 51% (24) | 70% (33) | 55% (26) | 30% (14) | 89% (42) | G: 36.09 P < 0.001 |
| Non-monitor lizards (92) | 84% (77) | 40% (37) | 33% (30) | 50% (46) | 49% (45) | 84% (77) | G: 63.90 P < 0.001 |
| G-test results: Differences between reptile groups | G: 89.82 P < 0.001 |
G: 37.96 P < 0.001 |
G: 52.06 P < 0.001 |
G: 63.45 P < 0.001 |
G: 88.32 P < 0.001 |
G: 85.06 P < 0.001 |
1
Numbers in parentheses next to each reptile group represent the total number of zoos that are providing reptiles with enrichment and have that particular reptile group in their installations. The total number of zoos that provided reptiles with enrichment was n = 102. Numbers in parentheses under each form of enrichment are the raw number of respondents. P-values reported remained significant after applying Holm’s (1979) sequential Bonferroni correction for experiment-wise error rate due to multiple testing. Percentages >50 are in bold.