Chapter 5 Reproductive Behavior Flashcards
What does non-seasonal breeders mean?
Dogs are non-season breeders, they may come into heat and become pregnant at any time in the year.
How many estrus cycles is most common for a female dog to have in a year?
Females may have from 1-4 estrous cycles per year, with two being the most common.
Define Courtship
求愛期 Courtship is the ritualized behaviour that surrounds the act of mating, when female enters estrous the play behaviour will stop and she will allow the male to mount.
How could aggression and submissive behavior affect breeding in both male and female
dogs?
-aggressive, dominant female may not allow shy or submissive male to breed her
-aggressive, domiant male may not be able to breed extremely shy or submissive female, as she’ll roll over
True or false. The presence of a less dominant male may inhibit copulation by a
dominant male.
-False, The presence of a dominant male may inhibit copulation by a less
dominant male.
How could the environment affect breeding?
A male may refuse to breed in a strange environment
True or false. Lack of socialization at an early age can result in dogs that are unable to
perform sexually.
True
True or false. Females should have one litter to make them more emotionally stable
False
True or false. Any frightening stimuli may inhibit erection in a male.
True
True or false. Females should go through at least one heat cycle before spaying
False
True or false. Males are more emotionally stable if they have a sexual experience before
neutering.
False
True or false. Research is showing some medical benefits of delaying desexing, particularly in larger breeds.
True
Does castration affect the animals intelligence or ability to work?
No, not at all
If a dog has already learned to mark the house with urine, will castration likely stop it?
Yes, urine making in the house is decreased 50% of the time by castration
What percent of dogs with roaming habits will decrease this behavior due to castration?
漫游Roaming habits decrease in 90% of dogs
What other behaviors are reduced due to castration?
- intermale aggression decreases noticeablely in 60% of cases
-mounting behavior is reduced in 67% of cases
-
True or false. Castration decreases sexual interest
True
True or false. Some degree of assertiveness may be lost due to castration.
True or false. Castration causes only 10% increase in physical activity.
True or false. Following castration, sexually experienced males retain sexual behavior
longer than inexperienced males.
All True
What is an example of a secondary physical characteristic that may be lost due to
neutering?
weight gain might reduce by feeding less food
What age should be female dogs spayed?
Before their first heat cycle, best time at 5-6 months of age
Several reasons why females should be spayed?
- absence of heat period
- no nesting behaviour
- no false pregnancies
- greatly reduced incidence of mammary tumours when spayed before their first heat
- prevents pyometra子宮積膿
- reduces the number of unwanted puppies
What are the signs of Pseudopregnancy?
- signs appear 4-6 weeks after the female was in heat
- abdomen enlarge, mammary glands develop and produce milk
- female starts nesting and bring toys to the nest
- become nervous or aggressive
- conditions may repeat following ever heat cycle until the dog is spayed
What are the feline sexual maturity?
Male sexual maturity: 8-9 months
Female sexual maturity : 6-8 months
Are cats plyestrous? 多求偶期
Yes
