Table 1 Anamnestic questions, the pre-determined response categories and open questions included in the Questionnaire

Is the cat regularly roaming free outdoors?

Yes; No

If Yes:

Suburb; City; Countryside

Had the cat roamed free outdoors within approximately 24 h prior to onset of symptoms?

Yes; No; Probably; Unknown

Location of the cat at time of discovery of symptoms

Indoors; Outdoors; Unknown; Other

Is the cat a known rodent hunter?

Yes; No

Did the owner see the cat ingesting rodent/rodents on the day of suspected poisoning?

Yes; No

Were there dead rodents, or visibly somnolent rodents near where the cat roams on the day of the acute debut of symptoms?

Yes; No; Unsure; Do not know

If yes: Where were the dead rodents, or visibly somnolent rodents?

Inside a bait-box; Outside of a bait-box; Possible presence of rodent trap unknown

Is rodenticide used near the home of the cat?

Yes; No; Unsure; Do not know

If yes:

Indoors in home/stable where the cat lives; Outdoors; Neighbours; Other

If yes: which poison(s)/ product(s):

(Free text)

Did the owner see the cat ingesting rodenticide?

Yes; No; Unsure

Any additional information as to how the cat came into contact with alpha chloralose?

(Free text)

On what grounds were alpha-chloralose poisoning suspected?

Anamnesis combined with symptoms; Symptoms, Knowledge of the feline cases of alpha chloralose poisoning in the area; Other

Were there other, differential diagnosis initially?

Yes; No; They are still relevant, diagnosis not clear

If yes, please name the differential diagnosis

(Free text)

Was abdominal diagnostic imaging performed?

Yes; No

If yes: Was mice or remnants of mice detected?

Yes; No