Table 2.

Categories of survey questions included in the MARS PETCARE BIOBANK surveys

Species	Category	Description
Enrolment DHL survey
Dog & Cat	Pet information	Name, age, sex, neuter status/date, age at, and method of adoption
Dog & Cat	Feeding Habits	Quantity, format and brand of food/s most often fed over previous 2 weeks Feeding pattern Use of treats and type provided
Dog & Cat	Behaviour & Lifestyle	Day time location Night time location Other pets in household Children in household Travel history Exercise habits
Cat	Behaviour & Lifestyle	Outdoor access Hunting Use of cat litter
6 Monthly DHL survey
Dog & Cat	Pet information	Name, age, sex, neuter status/date
Dog & Cat	Feeding habits	Quantity, format and brand of food fed most often over previous 2 weeks Feeding pattern Use of treats and type provided Change of diet in last 6 months and reason
Dog & Cat	Behaviour & Lifestyle	Day time location Night time location Other pets in household Children in household Travel in last 6 months Exercise habits
Cat specific	Behaviour & Lifestyle	Outdoor access Use of cat litter Hunting
Dog & Cat	Health / clinical signs	Veterinary visits and reason Health signs (e.g., itching, vomiting) OTC medications used OTC supplements used Prescribed medications Owners’ assessment of body condition
End of life survey
Dog & Cat	Pet information	Name, age,
	End of life	Date of death Cause of death Reason for euthanasia if applicable

DHL Diet, Health and Lifestyle, OTC Over the counter