Dog And Cat Reproduction

Question 1

What is Estrus

Answer 1

the period of sexual receptivity in females

Question 2

What is Estrous

Answer 2

adjective used to describe the estrous cycle

Question 3

What is the Estrous Cycle

Answer 3

the reproductive cycle of non-primate females that is defined by a time interval between one estrus and another

Question 4

When do dogs reach puberty

Answer 4

Small breed: 6-10 months

Large Breed: 18-24 months

Question 5

What order does the estrous cycle occur in dogs

Answer 5

Anestrus -> Proestrus -> Estrus -> Diestrus

APED

Question 6

What is Anestrus

Answer 6

A period of reproductive rest

Question 7

what is Proestrus

Answer 7

6-11 days

increase in ovarian follicular activity

Question 8

What do LH and FSH do

Answer 8

increase estrogen

Question 9

What does estrogen do

Answer 9

increase the growth of uterus & vagina mucosa & increased vascularization

Question 10

What is Estrus

Answer 10

Period of sexual receptivity

estrogen levels decrease
progesterone levels increase

Question 11

What causes ovulation

Answer 11

LH surge = Ovulation

following ovulation the corpus lutea will increase progesterone for 1-3 weeks

Question 12

What is diestrus

Answer 12

~2 months long

corpus lutea produces progesterone to support pregnant & non-pregnant uterus

Question 13

What is the pregnancy diagnosis in dogs

Answer 13

Abdomen Palpation:

day 20-30: walnut size growth in uterus

day 30-50: uterus is large but difficult to palpate fetuses

> 50 days: individual fetus can be distinguished

Question 14

When can a fetus be seen through an ultrasound in a dog

Answer 14

Day 25 gestation

Question 15

When can a fetus be seen in a radiograph in dogs

Answer 15

day 45

Question 16

do pregnancy tests work on dogs

Answer 16

no; only blood tests work to measure relaxin at 24-30 days

Question 17

What happens during split heats

Answer 17

There is no ovulation in the first estrus/proestrus cycle but there is in the second one

Question 18

when is ovulation failure seen

Answer 18

in bitches with short inner-estrus periods <4 months

Question 19

What causes abnormal estrous cycle

Answer 19

ovarian cysts/tumours

Question 20

what are factors of failure to concieve

Answer 20

• incorrect timing of mating
• stress
• infertile males
• uterine problems

Question 21

what is Dystocia

Answer 21

difficult birthing

Question 22

What is a pyometra

Answer 22

infection of uterus

Question 23

What is the treatment of pyometra

Answer 23

surgery

Question 24

What is eclampsia

Answer 24

hypocalcemia (low blood calcium)
~milk fever

causes muscle twitching, seizures, death

Question 25

What is the difference between cat & dog estrous cycle

Answer 25

-cats have photoperiod effects cycle & can have multiple proestrus periods

Question 26

explain anestrus, proestrus, estrus, and diestrus cycles in cats

Answer 26

Anestrus: occurs with short daylight (0ct-dec)

Proestrus: increasing blood levels of estrogen

Estrus: sexual receptivity (2-19 days): queens vocalize & posture for male

Proestrus: cycles between if queen’s fail to ovulate

Diestrus: occurs following induced ovulation. Corpus lutea produces progesterone

Question 27

What causes ovulation in cats

Answer 27

copulation releases GnRH from the hypothalamus which induces the release of gonadotropins from the pituitary which will induce an LH surge resulting in ovulation

Question 28

What is the gestational length in cats & dogs

Answer 28

Cats: 63 days

Dogs: 66 days

Question 29

What are the 6 myths of breeding dogs & cats

Answer 29

1. Earn extra income
2. Children want to see the miracle of birth
3. Want a similar dog/cat to the one you have
4. Raising a litter is fun
5. Pet will miss out on the opportunity to reproduce
6. We can find good homes for the puppies or kittens