Age at death and cause of death of pet rabbits
As the quality of care received by pet rabbits improves, the age at death of these animals is expected to increase. But reliable data on the age at death of pet rabbits is lacking. The present retrospective study aims to clarify the age at death and cause of death of pet rabbits.
The age at death, cause of death, and clinical details of 898 rabbits that died between 2006 and 2020 were obtained by reviewing paper-based medical records, including necropsy or biopsy reports, at a referral exotic animal hospital in Japan.
Data showed that the median age at death in the 898 rabbits was seven years (interquartile range: five to nine years), and 18% of all rabbits lived beyond nine years.
The main causes of death included neoplasia (n = 223; 24.8%), gastrointestinal disease (n = 135; 15.0%), bacterial abscess (n = 90; 10.0%), urinary disease (n = 85; 9.5%), trauma (n = 44; 4.9%) and cardiac disease (n = 27; 3.0%).
Gastrointestinal disease was the most common cause of death in younger rabbits (four years or less), while neoplasia was the most common cause of death in the middle- to older-aged rabbits (five years or more).
This is one of the largest retrospective studies on the age at death in pet rabbits conducted to date. The authors affirm that the findings will serve as a useful reference for veterinarians working with such rabbits. Nevertheless, additional studies are needed to elucidate differences in the age at death of rabbits according to sex and neutering status.
Takanori Shiga, et al. “Age at death and cause of death of pet rabbits (Oryctolagus cuniculus) seen at an exotic animal clinic in Tokyo, Japan: a retrospective study of 898 cases (2006–2020).” Journal of Exotic Pet Medicine. Volume 43, October 2022, Pp. 35-39.
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