Table 1.

Modified questionnaire ⁷ translated from Finnish

	Questions	1	2	3	4	5
1	How does your cat walk?	Completely normally	Occasionally with difficulty	Sometimes with difficulty	Often with difficulty	With difficulty, limping
2	How does your cat run?	Completely normally	Occasionally with difficulty	Sometimes with difficulty	Often with difficulty	With difficulty, limping
3	How does your cat jump up?	Completely normally	Occasionally with difficulty	Sometimes with difficulty	Often with difficulty	With difficulty, doesn’t jump
4	How does your cat jump down?	Completely normally	Occasionally with difficulty	Sometimes with difficulty	Often with difficulty	With difficulty, doesn’t jump
5	How does your cat climb stairs	Completely normally	Occasionally with difficulty	Sometimes with difficulty	Often with difficulty	With difficulty, doesn’t climb
6	How does your cat descend stairs	Completely normally	Occasionally with difficulty	Sometimes with difficulty	Often with difficulty	With difficulty, doesn’t descend
7	How does your cat play with other pets?	Completely normally	Occasionally with difficulty	Sometimes with difficulty	Often with difficulty	With difficulty, doesn’t play
8	How does your cat rise from a resting position?	Completely normally	Occasionally with difficulty	Sometimes with difficulty	Often with difficulty	With major difficulty
9	How does your cat chase objects/toys/things?	Completely normally	Occasionally with difficulty	Sometimes with difficulty	Often with difficulty	With difficulty, doesn’t chase
10	How does your cat stretch?	Completely normally	Occasionally with difficulty	Sometimes with difficulty	Often with difficulty	With difficulty, doesn’t stretch
11	How does your cat eat (eating behaviour)?	Completely normally	Occasionally with difficulty	Sometimes with difficulty	Often with difficulty	With difficulty, poorly
12	Does your cat seek seclusion?	Normally	Occasionally	Quite often	Often	Constantly
13	How does your cat jump up high?	Completely normally	Occasionally with difficulty	Sometimes with difficulty	Often with difficulty	With difficulty, doesn’t jump
14	How does your cat jump down from high?	Completely normally	Occasionally with difficulty	Sometimes with difficulty	Often with difficulty	With difficulty, doesn’t jump
15	How does your cat sleep?	Completely normally	Occasionally more	Sometimes more	Often more	Mainly sleeps
16	How does your cat play with toys?	Completely normally	Occasionally less	Sometimes less	Doesn’t play often	Plays with difficulty, doesn’t play
17	What is your cat’s overall quality of life?	Normal/good	Quite good	Moderate	Worsened	Poor