Table 1.
Item loadings in the feline behavior and personality questionnaire. Item names are abbreviated from the original statements, and the whole statements can be seen in Supplementary Table S3.
| N. | Item (Abbreviated) |
Fearfulness | Activity/ Playfulness |
Aggression Toward Humans | Sociability Toward Humans | Sociability Toward Cats | Excessive Grooming | Litterbox Issues |
|---|---|---|---|---|---|---|---|---|
| 72 | Growls/hisses (unfam. adults) | 0.36 | 0.11 | 0.34 | −0.10 | −0.23 | 0.03 | 0.04 |
| 90 | Growls/hisses petting (unfam. person) | 0.35 | 0.09 | 0.45 | −0.11 | −0.22 | 0.00 | 0.01 |
| 125 | Suspicious | 0.84 | −0.02 | −0.10 | 0.01 | −0.03 | −0.03 | −0.02 |
| 137 | Escapes/hides (unfam. people) | 0.94 | −0.02 | −0.04 | 0.10 | 0.05 | −0.03 | 0.01 |
| 117 | Freezes (at vet) | 0.53 | −0.07 | 0.03 | 0.11 | 0.08 | 0.09 | 0.06 |
| 133 | Hides/escapes (fam. prepares to leave) | 0.38 | −0.05 | 0.10 | 0.11 | 0.01 | 0.08 | 0.08 |
| 78 | Runs/hides noise outside | 0.44 | 0.01 | 0.09 | 0.17 | 0.13 | 0.03 | 0.09 |
| 65 | Restless/fearful (home modified) | 0.41 | −0.03 | 0.11 | 0.18 | 0.06 | 0.12 | 0.26 |
| 36 | Restless/fearful (unfam. objects) | 0.48 | −0.04 | 0.09 | 0.14 | 0.09 | 0.20 | 0.19 |
| 29 | Stares (unfam. people) | 0.32 | 0.14 | 0.06 | 0.09 | 0.00 | 0.00 | 0.05 |
| 113 | Easily scared | 0.62 | −0.04 | 0.06 | 0.17 | 0.12 | 0.11 | 0.07 |
| 92 | Runs/hides noise inside | 0.64 | −0.06 | 0.07 | 0.22 | 0.17 | 0.05 | 0.05 |
| 31 | Greets unfam. adults | −0.85 | −0.04 | 0.04 | 0.20 | 0.07 | 0.04 | 0.02 |
| 66 | Greets unfam. children | −0.78 | −0.02 | −0.02 | 0.09 | 0.12 | 0.03 | 0.05 |
| 35 | Comfortable/relaxed in social gatherings | −0.90 | 0.02 | 0.03 | −0.02 | 0.00 | 0.01 | 0.01 |
| 58 | Comfortable/relaxed petted (unfam. people) | −0.83 | −0.09 | −0.03 | 0.22 | 0.07 | 0.01 | 0.04 |
| 27 | Comfortable/confident (unfam. places) | −0.65 | 0.09 | −0.09 | −0.09 | −0.04 | −0.07 | −0.01 |
| 56 | Confident at home | −0.45 | 0.20 | 0.01 | 0.13 | 0.03 | −0.14 | −0.13 |
| 55 | Comfortable playing (unfam. people) | −0.82 | 0.05 | −0.03 | 0.09 | 0.10 | 0.01 | 0.00 |
| 103 | Active | −0.09 | 0.62 | −0.02 | −0.06 | 0.11 | −0.06 | −0.04 |
| 96 | Waiting fam. member at door | −0.16 | 0.34 | −0.02 | 0.28 | −0.02 | 0.01 | −0.05 |
| 122 | Carries toys | 0.00 | 0.59 | −0.06 | 0.00 | 0.07 | 0.06 | −0.04 |
| 132 | Chases shadows/lights | 0.00 | 0.46 | 0.01 | −0.04 | 0.06 | −0.01 | −0.06 |
| 12 | Chases imaginary objects | 0.08 | 0.33 | 0.09 | 0.07 | 0.06 | 0.17 | 0.05 |
| 99 | Chases small animals | 0.03 | 0.43 | 0.02 | −0.09 | −0.09 | −0.18 | −0.01 |
| 109 | Enjoys jumping/climbing | −0.01 | 0.58 | −0.05 | −0.11 | −0.03 | −0.06 | 0.05 |
| 111 | Gets excited (animals at the window) | 0.06 | 0.51 | 0.02 | 0.02 | −0.07 | −0.10 | 0.01 |
| 24 | Gets excited (new toys) | −0.05 | 0.55 | −0.05 | −0.03 | 0.17 | −0.06 | −0.03 |
| 70 | Interactive play (people) | 0.00 | 0.58 | −0.08 | 0.11 | 0.00 | 0.05 | −0.03 |
| 43 | Is persevering | −0.16 | 0.32 | 0.24 | 0.08 | 0.00 | 0.03 | 0.01 |
| 71 | Moves elegantly | −0.02 | 0.34 | −0.06 | −0.09 | −0.06 | −0.14 | 0.01 |
| 112 | Sudden bursts of running | 0.04 | 0.50 | 0.03 | 0.10 | 0.18 | 0.06 | −0.02 |
| 91 | Plays fetch | −0.03 | 0.53 | −0.04 | 0.08 | 0.00 | 0.03 | −0.04 |
| 64 | Finds new ways to get attention | −0.13 | 0.50 | 0.01 | 0.25 | −0.02 | 0.05 | 0.04 |
| 28 | Associate things | −0.09 | 0.38 | −0.04 | 0.15 | −0.04 | −0.09 | 0.02 |
| 44 | Reacts to video/sound (TV/computer) | 0.04 | 0.41 | −0.06 | 0.03 | 0.05 | 0.05 | −0.02 |
| 52 | Rests/sleeps in elevated places | 0.04 | 0.39 | 0.01 | −0.13 | −0.01 | −0.04 | 0.09 |
| 86 | Runs around playing | 0.02 | 0.62 | −0.01 | 0.04 | 0.16 | −0.02 | −0.06 |
| 105 | Stalks moving objects | 0.01 | 0.66 | −0.05 | −0.02 | 0.10 | −0.07 | −0.07 |
| 77 | Walks to front door (fam. member leaving) | −0.16 | 0.35 | 0.02 | 0.25 | −0.03 | 0.06 | −0.01 |
| 110 | Chases/ambushes fam. members | −0.02 | 0.44 | 0.07 | 0.00 | 0.26 | 0.03 | 0.03 |
| 80 | Scratch/bite fam. cat (fam. cat staring/growling/hissing) | −0.01 | 0.07 | 0.31 | 0.02 | −0.38 | 0.08 | 0.14 |
| 138 | Scratch/bite (petted on the belly) | 0.03 | 0.01 | 0.66 | −0.03 | −0.05 | −0.02 | 0.00 |
| 53 | Scratch/bite (brushed) | 0.00 | 0.00 | 0.67 | 0.02 | −0.01 | −0.08 | 0.00 |
| 75 | Scratch/bite (vet) | −0.01 | −0.02 | 0.74 | 0.03 | 0.00 | 0.00 | −0.02 |
| 30 | Scratch/bite (nails clipped) | −0.06 | −0.02 | 0.87 | 0.02 | 0.05 | 0.00 | −0.01 |
| 38 | Scratch/bite (petted base of the tail) | −0.04 | 0.00 | 0.67 | −0.01 | −0.01 | 0.04 | 0.01 |
| 23 | Chases/bites moving legs/feet | −0.04 | 0.22 | 0.37 | 0.01 | 0.04 | 0.00 | 0.08 |
| 6 | Growls/hisses (approached by human while having food) | −0.04 | 0.15 | 0.37 | −0.02 | −0.10 | −0.07 | 0.12 |
| 61 | Growls/hisses (vet) | −0.01 | 0.03 | 0.60 | 0.00 | −0.13 | 0.03 | −0.02 |
| 46 | Growls/hisses (medicine, fam. person) | 0.03 | −0.04 | 0.80 | 0.02 | −0.01 | −0.02 | −0.02 |
| 128 | Growls/hisses (nails clipped) | −0.04 | −0.01 | 0.79 | −0.06 | −0.05 | −0.03 | −0.05 |
| 73 | Growls/hisses (petted base of the tail) | −0.02 | −0.05 | 0.72 | −0.07 | −0.07 | 0.03 | 0.02 |
| 114 | Unexpectedly scratches/bites (petted) | −0.03 | 0.11 | 0.61 | −0.02 | −0.06 | 0.04 | 0.02 |
| 5 | Scratch/bite (medicine, fam. person) | 0.03 | −0.10 | 0.84 | 0.02 | 0.10 | −0.01 | 0.01 |
| 59 | Squirms/escape (picked up/held) | 0.19 | 0.05 | 0.30 | −0.26 | 0.06 | 0.08 | 0.03 |
| 104 | Human-oriented | −0.13 | 0.03 | −0.06 | 0.47 | −0.58 | −0.01 | −0.06 |
| 120 | Squirms/escape (in lap) | 0.24 | 0.10 | 0.23 | −0.32 | 0.00 | 0.06 | 0.02 |
| 26 | “Talks” to people | −0.01 | 0.22 | −0.02 | 0.49 | −0.02 | −0.02 | 0.02 |
| 8 | Always purrs when petted | −0.03 | −0.08 | −0.10 | 0.55 | 0.01 | −0.12 | −0.02 |
| 39 | Comes when called | −0.09 | 0.17 | −0.10 | 0.38 | −0.05 | −0.02 | −0.01 |
| 37 | Seeks physical contact (people) | −0.21 | 0.05 | −0.12 | 0.60 | 0.01 | −0.02 | −0.06 |
| 21 | Purrs (in lap) | −0.02 | −0.02 | −0.04 | 0.54 | −0.05 | −0.09 | −0.06 |
| 54 | Reacts by vocalizing | 0.07 | 0.27 | 0.04 | 0.39 | 0.00 | 0.04 | 0.05 |
| 127 | Restless (fam. people shows affection to person) | 0.02 | 0.20 | 0.09 | 0.32 | −0.03 | 0.19 | 0.13 |
| 115 | Restless (fam. people shows affection pet) | 0.04 | 0.18 | 0.15 | 0.35 | −0.02 | 0.12 | 0.11 |
| 101 | Restless/pacing (fam. member leave) | 0.13 | 0.23 | 0.08 | 0.38 | −0.01 | 0.16 | 0.08 |
| 57 | Lie on things used | −0.09 | 0.22 | 0.03 | 0.33 | −0.10 | 0.02 | 0.00 |
| 15 | Vocalizes (left alone) | 0.01 | 0.25 | 0.05 | 0.34 | −0.03 | 0.17 | 0.09 |
| 118 | Enjoys playing with cats | −0.02 | 0.27 | −0.02 | 0.00 | 0.75 | −0.04 | −0.04 |
| 119 | Seeks company (cats) | −0.06 | 0.11 | 0.03 | 0.01 | 0.80 | −0.03 | −0.01 |
| 17 | Seeks physical contact (cats) | −0.06 | 0.10 | 0.00 | −0.01 | 0.77 | 0.02 | 0.06 |
| 102 | Gets along (cats) | −0.04 | −0.04 | −0.08 | 0.05 | 0.71 | −0.11 | −0.11 |
| 60 | Growls/hisses (fam. cat staring/growling/hissing) | 0.02 | 0.08 | 0.20 | 0.04 | −0.54 | 0.04 | 0.14 |
| 67 | Growls/hisses in favorite resting place (fam. cat) | 0.01 | 0.04 | 0.22 | −0.01 | −0.59 | 0.05 | 0.15 |
| 76 | Exhibits self-mutilation | −0.02 | −0.03 | −0.05 | −0.05 | −0.03 | 0.85 | −0.03 |
| 51 | Sudden frantic licking/chewing (self) | 0.05 | 0.01 | 0.09 | 0.07 | −0.02 | 0.68 | −0.06 |
| 98 | Excessive/intensive grooming | −0.04 | −0.01 | −0.06 | −0.06 | −0.01 | 0.91 | 0.00 |
| 124 | Defecates inappropriate places | −0.05 | −0.13 | −0.02 | −0.02 | 0.02 | −0.02 | 0.74 |
| 13 | Refuses shared litter box | 0.00 | 0.06 | 0.01 | −0.03 | −0.22 | 0.03 | 0.62 |
| 48 | Prefers some cat litters | 0.02 | 0.11 | 0.01 | 0.07 | 0.04 | 0.05 | 0.37 |
| 88 | Refuses dirty litter box | 0.03 | 0.07 | −0.01 | 0.07 | 0.00 | −0.01 | 0.63 |
| 100 | Sprays indoors | −0.07 | 0.04 | −0.09 | −0.15 | −0.03 | −0.08 | 0.57 |
| 4 | Urinates inappropriate places | −0.01 | −0.05 | −0.05 | −0.02 | 0.03 | −0.03 | 0.79 |
Loading items (≥|0.3|) are in bold.