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The Best Age to Spay and Neuter

Mar 27, 2008
Kustritz, M. V. (2007). "Determining the optimal age for gonadectomy of dogs and cats." J Am Vet Med Assoc 231(11): 1665-75.

Spaying female cats and castrating male cats, also called gonadectomy, are among the most commonly performed surgeries in veterinary medicine. Increasingly, both pet owners and veterinarians are questioning the best age to perform gonadectomy. Most veterinarians in the U.S. recommend gonadectomy for cats and dogs between 6 and 9 months of age. However, there is no scientific evidence to document that this is the optimal age. In fact, the age for gonadectomy of cats and dogs has varied tremendously over time and by geographic location. This article is a review of the scientific evidence on optimal ages for gonadectomy.
>> Free full text article available

Related articles:
Howe, L. M. (2006). "Surgical methods of contraception and sterilization." Theriogenology 66(3): 500-9.
>> PubMed abstract

Olson, P., M. Kustritz, et al. (2001). "Early-age neutering of dogs and cats in the United States (a review)." J Reprod Fertil Suppl 57: 223-232.
>> PubMed abstract
ovariohysterectomy early age altering neutering gonadectomy castration spay

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