Not exact matches
For both
male and female Rotties spayed or neutered before one year of age, there was a one in four lifetime
risk for bone cancer, and the sterilized animals were significantly more likely to develop the disease
than intact dogs of the same breed.
A study on Golden Retrievers found that
male dogs who were neutered before 12 months of age had double the
risk of hip dysplasia
than their
intact counterparts (Torres de la Riva G, Hart BL, Farver TB, Oberbauer AM, Messam LLM, et al. (2013) Neutering Dogs: Effects on Joint Disorders and Cancers in Golden Retrievers)
The
risk for castrated
males was slightly greater
than that for
intact males, which had 2.4 times the relative
risk of
intact females.
A retrospective study of cardiac tumors in dogs showed that there was a 5 times greater
risk of hemangiosarcoma, one of the three most common cancers in dogs, in spayed bitches
than intact bitches and a 2.4 times greater
risk of hemangiosarcoma in neutered dogs as compared to
intact males.
Both studies found that neutered
male dogs have a four times higher
risk of prostate cancer
than intact dogs.
Intact females were at 2.86 to 14 times higher risk than neutered females and intact males were at 2.3 to 10 times higher risk than neutered males for these early onset condi
Intact females were at 2.86 to 14 times higher
risk than neutered females and
intact males were at 2.3 to 10 times higher risk than neutered males for these early onset condi
intact males were at 2.3 to 10 times higher
risk than neutered
males for these early onset conditions.
Multivariable analysis indicated that age, sex, health status, and cat lifestyle and source were significantly associated with
risk of seropositivity, with adults more likely to be seropositive
than juveniles (adjusted odds ratios [ORs], 2.5 and 2.05 for FeLV and FIV seropositivity, respectively), sexually
intact adult
males more likely to be seropositive
than sexually
intact adult females (adjusted ORs, 2.4 and 4.66), and outdoor cats that were sick at the time of testing more likely to be seropositive
than healthy indoor cats (adjusted ORs, 8.89 and 11.3).
«
Male and female dogs that underwent gonadectomy before 1 year of age had an approximate one in four lifetime
risk for bone sarcoma and were significantly more likely to develop bone sarcoma
than dogs that were sexually
intact.»
For example,
intact males constitute 80 percent of all dogs presented to veterinary behaviorists for what formerly has been described as dominance aggression, are involved in 70 to 76 percent of reported dog bite incidents, and are 2.6 times more likely to bite
than neutered dogs, while unspayed females «attract free - roaming
males, which increases bite
risk to people through increased exposure to unfamiliar dogs,» and «contribute to the population of unwanted» and potentially aggressive dogs (Gershman et al., 1993; Sacks et al., 2000; AVMA, 2001).