Fig. 3
From: Cranial morphology of captive mammals: a meta-analysis
Analyses of magnitude associated with ecological covariates. a-c: trophic level, d-f: dietary breadth, and g-i: relative home range size. Columns indicate analyses of skull length (a, d, g), skull width (b, e, h), or skull length-to-width (c, f, i). Forest plot lines that do not cross the dotted zero line demonstrate a significant difference between captive and wild populations