Table 2.

Parameters of behavioral responses of a pig to the handler [9,16].

Behavior	Definition
Look at the handler (looking)	Head pointing to the handler
Contact with the handler (contact)	Pigs touch or sniff handler; piglets interact with the handler by placing their forelegs on the handler
Avoiding handler (avoidance)	Move away from the handler, or turn head in the opposite direction from the handler; legs on the wall to try to escape the test pen
No contact with subjects (no contact)	Does not interact with the handler or explore the test pen