Table 1 Categories and their respective description used for rating the likelihood of grey seal predation and fox interaction.

From: Assessing seal carcasses potentially subjected to grey seal predation

Category Definition
Definite The attack was observed and the carcass was retrieved straight after
Likely It is highly likely that the documented trauma is the result of grey seal predation; the majority of parameters 1–9 have been found
Possible It is possible that the documented trauma is the result of grey seal predation; some of the parameters 1–9 have been found; potentially some indication of a different origin of trauma
Unlikely It is unlikely that the documented trauma is the result of grey seal predation; the majority of parameters have not been found; clear indication of a different origin of trauma
Fox It is unlikely that the documented trauma is the result of grey seal predation, but indicators of an interaction with a red fox have been found (parameters 10, 11)