Problem of reptile play: Environmental enrichment and play behavior in a captive Nile soft-shelled turtle
Burghardt, G.M., Ward, B., Rosscoe, R.
· 1990
★ NIFPlay Rating: 8
Rating Scale
10 Rigorous play-specific science
6–9 General biological science
5 Sound play research (uncontrolled)
1–4 Less rigorous / indirect
0 Indirect but high value
Burghardt's landmark documentation of play-like behavior in a reptile — a Nile soft-shelled turtle — challenging assumptions that play is exclusive to mammals and birds.
