The objective of this retrospective cohort study was to determine the factors affecting the time until adoption of dogs re-homed by Dogs Trust, a UK charity. There were 13,338 records included in the study, representing 11,663 dogs. Data were extracted from the Dogs Trust's database between February 2001 and June 2004 representing all re-homing centres in the UK using the database during this time period. A survival analysis was conducted using Kaplan-Meier plots and multivariable Cox regression. The results of the study showed that the median time till adoption for all dogs was 28 days (95% CI 28-29 days). The variables which affected the time till adoption were breed, purebred status, size, sex, neuter status on arrival at a centre, age, coat colour, veterinary history and re-homing centre. It was suggested that temperament could be an important risk factor but this variable had to be excluded from the multivariable analysis. Dogs from the gundog and utility breed groups and purebred dogs were re-homed at the fastest rate.

A small proportion of greyhounds surplus to the racing industry are entered into specialist re-homing organisations to be re-purposed as pets. Records of 835 greyhounds, from New Zealand Greyhounds as Pets, were used to investigate whether pre-adoption characteristics (age, sex, racing record, reason entered) and management factors (temperament test result, foster and trainer effects) had a bearing on re-homing success, and comparisons were made with shelter studies. Re-homing greyhounds as pets is very successful with 85.5% ultimately successfully re-homed. Only 2.9% fail as a result of failed adoptions and 11.6% fail the initial temperament test and are therefore not considered for adoption. Greyhounds were more likely than shelter dogs to pass an initial temperament test and be adopted, and less likely to be returned after one month. However, adopted greyhounds were just as likely as shelter dogs to be returned after six months. Logistic regression revealed the youngest age group (< 25 months old) were more likely to pass the initial temperament test than older greyhounds. The re-homing success of greyhounds subsequently made available for adoption was not affected by age, but a sex effect was evident with females more likely to be successfully re-homed than males. Whether or not a dog had raced had no significant effect on the likelihood of successful re-homing. Greyhounds passing the temperament test with a basic pass were less likely to be successfully re-homed than greyhounds scoring a higher pass indicative of lower prey drive. Further investigation of the validity and reliability of the temperament test is warranted.