Table 1.

The 20 potential behavioural factors influencing cat owners’ containment behaviour identified from the literature that were used in the questionnaire.

Type	Behavioural Factor
Capability	Cat howls too much if unable to get outside
	Cat uses existing doggy door
	People leave door open and let cat out
Opportunity	Kitty litter too expensive
	Home is too small
	Too expensive to build an enclosure
	Neighbours do not want cat-proof fence
Motivation	Believe containment prevents predation
	Believe containment prevents fighting with other cats
	Believe containment prevents traffic injury
	Believe containment prevents stealing
	Believe containment reduces being lost
	Believe containment prevents injury by cat hater
	Believe containment prevents disease transmission
	Do not like urine smell in house
	Believe cat needs to roam
	Believe cat will get fat if contained
	Believe their cat does not like being contained
	Believe cat will be destructive if contained
	Believe not all cats kill wildlife