The portrayal of animal interactions in nature documentaries by David Attenborough and Bernhard Grzimek

Table 4 Results of the multinomial logistic regression with the best model fit (Model 1b)

Interaction category	Intercept	Decade 2 (1970–1979)	Decade 3 (1980–1989)	Decade 4 (1990–1999)	Decade 5 (2000–2009)	Decade 6 (2010–2019)
Interspecific cooperation	− 1.609 0.005	− 0.876 0.211	− 1.289 0.069	− 0.163 0.867	− 1.053 0.112	− 0.115 0.927
Intraspecific antagonistic	− 1.386 0.008	− 0.118 0.909	− 0.893 0.149	0.940 0.091	− 0.717 0.230	0.103 0.928
Intraspecific cooperation & parental care	− 0.049 0.955	0.320 0.400	− 0.576 0.116	0.244 0.536	− 0.417 0.251	− 0.245 0.543

Test coefficients (in italics) and corresponding p-values (below). None of the 6 levels of the categorical variable ‘time’ has a statistically significant effect on the response variable ‘Interaction’

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