Pros and Cons of Spay Neuter

Question 1

what is the lifetime risk of a female dog developing pyometra in her lifetime?

Answer 1

20-25%

Question 2

what is the most common tumor of the female dog?

Answer 2

mammary gland tumors

Question 3

how many mammary gland tumors in dogs are benign?

Answer 3

50%

Question 4

what are the disadvantages of hormone loss in dogs?

Answer 4

obesity
behavior
increase certain cancers
increase certain non-cancerous diseases

Question 5

does castration decrease the risk of prostate neoplasia?

Answer 5

no

Question 6

which dog breed has a higher chance than other breeds to develop osteosarcoma?

Answer 6

rottweilers
12.6% chance

Question 7

does gonadectomy increase risk of hemangiosarcoma?

Answer 7

yes: 2.5x increased risk

Question 8

how does gonadectomy affect the chance of a dog developing cranial cruciate ligament disease?

Answer 8

double prevalence of cranial cruciate ligament injury

Question 9

what mediates pyometra?

Answer 9

progesterone

Question 10

what is the absolute lifetime risk of a female dog developing mammary tumors?

Answer 10

2-3.5%

Question 11

are mammary tumors breed dependent?

Answer 11

yes

Question 12

what percentage of mammary gland tumors are benign?

Answer 12

50%

Question 13

what cancers have increased risk in neutered male dogs?

Answer 13

prostate
bladder
urethral
osteosarcoma
hemangiosarcoma
lymphosarcoma

Question 14

what cancers have increased risk in spayed female dogs?

Answer 14

bladder
urethral
osteosarcoma
hemangiosarcoma
mast cell tumor
lymphosarcoma

Question 15

how does gonadectomy affect CCL?

Answer 15

doubles risk of rupture

Question 16

when can urethral sphincter mechanism incompetence occur?

Answer 16

immediately
up to 10 years after surgery