Table 1.

Canid Demographics

Experiment 1
Dog	Breed	Age	Gender	Days in Shelter	Source
Dog S	Pit bull x	2y	SF	23 days	Stray—OTC
Lindsay	Basset hound x	4y	SF	23 days	Stray—OTC
Snickers	Australian shepherd	2y	NM	17 days	Owner surrender
Dixie	Shepherd x	1y 6m	SF	6 days	Return—OTC
Dog T	Belgian malinois	5y	F	12 days	Stray—field
Sara	German shepherd x	>1y	SF	26 days	Return
Caffrey	Akita x	2y	NM	14 days	Stray—field
Tyson	Doberman x	>1y	NM	27 days	Stray—field
Bear	Chihuahua x	2y	NM	6 days	Owner surrender
Experiment 2
Dog	Breed	Age	Gender	Days in Shelter	Source
Dog U	Labrador/Terrier x	3y	SF	18 days	Stray—field
Bubba	Labrador x	10m	NM	10 days	Owner surrender
Dog V	Australian shepherd	1y	NM	13 days	Stray—field
Paw Paw	Sharpei x	2y	NM	30 days	Stray—field
Dog W	Bull terrier x	1y	SF	12 days	Stray—field
Bo	Shepherd/Pit x	>1y	NM	28 days	Stray—Field
Experiment 3
Dog	Breed	Age	Gender	Time in Home
Aero	German shepherd	10y	NM	9y 6m
Danger Mouse	Pomeranian/Pug x	3y 6m	SF	2y
Luke	Shepherd/Labrador x	8y	NM	8y
Jackson	Beagle/Basset x	6y	NM	4y
Conner	Vizsla x	7y	NM	6y
Kobe	Akita x	2y	NM	11m
Experiment 4
Dog	Breed	Age	Gender	Days in Shelter	Source
Dog X	Boxer/Pit bull x	1y	SF	12 days	Stray—Field
Dog Y	Shepherd/Labrador x	2y	NM	14 days	Stray—Field
Lilly	Bloodhound	2y	SF	20 days	Owner surrender
Happy	Giant schnauzer x	1y	NM	11 days	Owner surrender
Roxy	Pit bull x	8m	SF	9 days	Owner surrender
Dog Z	Canaan/Pit bull x	2y	SF	10 days	Stray—OTC
Isis	Husky x	4y	SF	24 days	Stray—OTC
Experiment 5
Wolf		Age	Gender
Wotan		6y	NM
Kailani		7y	F
Ruedi		7y	M
Ayla		7y	F
Renki		7y	M
Erin		13y	F
Wolfgang		6y	NM
Dharma		10m	F
Marion		13y	F

Note. Shelter dogs that did not have a name were assigned a letter for identification. Age is reported in years (y) and months (m). Gender: F is Female, M is Male, S is spayed, N is Neutered. Under breeds the predominant breeds are listed and an x indicates the dog is a mix. For shelter dogs, the ages and breeds were what the surrendering owner reported (owner surrender dogs) or the shelter staff's best estimate for stray dogs. Days in Shelter indicates how long the dog had been in the shelter when it was used in the study. Source was how the dog came to be in the shelter: owner surrenders, returns (adopted and surrendered again), stray and brought into the shelter by a community member (Stray—OTC), or stray and picked up by an animal control officer (Stray–Field). For owned dogs, Time in Home indicates how long the present owner had owned the dog at the time of the study and is reported in years (y) and months (m).