Comparative urinary + reproductive system

Question 1

What are ‘caecatrophes’?

A. Urinary deposits
B. Soft pellets
C. Dry pellets
D. Diarrhoea

Answer 1

B. Soft pellets

Question 2

True or false.

Both female and male chinchilla’s have 3 pairs of nipples.

Answer 2

True

Question 3

How can you tell a female and male chinchilla apart, in relation to their anogenital space?

Answer 3

• Female = smaller space between the genitalia + anus
• Male = larger space between the genitalia + anus

Question 4

Name the external orifice that combines the 3 bodily systems.
+
And what are they?

Answer 4

Vent
+
The Reproductive, Urinary + Digestive systems/tracts

Question 5

What is the other name for the vent in birds?

Answer 5

Cloaca

Question 6

What’s the difference between Oviparaous + Ovo-viviparous?

Answer 6

• Oviparaous = Egg laying externally
• Ovo-viviparous = Egg laying Internally

Question 7

When sexting a rabbit what 2 key things should you look for?

Answer 7

1. The presence of testes
2. The shape of the external orifice

Question 8

What is the shape of the female rabbit’s external orifice?

Answer 8

Slit shaped + pointed at the front

Question 9

What is the shape of the male rabbit’s external orifice?

Answer 9

Prepuce is more circular
(Penis is easily protruded in the adult rabbi)

Question 10

What is the gestation period of the rabbit?

Answer 10

28 - 32 days

Question 11

When do rabbits meet sexual maturity?

Answer 11

3 months old

Question 12

Why must female rabbits be spayed, unless they are to be used for breeding?

Answer 12

Because:
* An unmated female may remain in season until Autumn = can cause anaemia
* Causes prolonged enlargement of the vulva = predispose her to Pyometra

Question 13

What months are Chinchilla’s in heat for?

Answer 13

November > May

Question 14

Why are Chinchilla’s hard to sex?

Answer 14

Because both female + males both have large urethral prominences, that can be mistaken as a penis

Question 15

What is the gestation period of the Guinea Pig?

Answer 15

60 - 72 days
(av. 65 days)

Question 16

What is the main/common characteristic between the male + female external genitalia of rodents?

Answer 16

• In all females, the genital + urinary orifices are seperate + therefore have 3 openings.

Thus..
* Males = 2 openings
* Females = 3 openings

Question 17

When are the gential orifices of rodents patent + therefore harder to locate?

Answer 17

When they are in season + prior to parturition

Question 18

When do birds mate?

Answer 18

Later summer

Question 19

What is the function of the preen gland in birds?

Answer 19

Production of oil + to keep plumage in good condition

Question 20

They both begin with p…

What 2 species of bird produce ‘crop milk’ to feed their young?

Answer 20

1. Pigeons
2. Parrots

Question 21

What is the weaning age in the ferret?

Answer 21

6 - 8 weeks/old

Question 22

What is the litter size of a ferret?

Answer 22

2 - 6

Question 23

How long is the ferret’s gestation period?

Answer 23

38 - 44 days

Question 24

At what age does a Jill reach puberty?

Answer 24

7 - 10
months/old

Question 25

At what age does a hob reach puberty?

Answer 25

5 - 15
months/old

Question 26

What type of ovulator is the ferret?

Answer 26

Induced ovulator

Question 27

What type of oestrus cycle does the ferret have?

Answer 27

Seasonally Monoestrous

Question 28

What may happen to the jill’s young if she is disturbed?

Answer 28

She may eat them

Question 29

If a jill is not mated with, how long may she remain in oestrus?

Answer 29

Forever
(this is fatal)

Question 30

How many hours after mating does ovulation occur in ferrets?

Answer 30

30 - 40 hours
after

Question 31

What months do jill’s season’s start + finish?

Answer 31

• Start = March
• End = September

Question 32

What type of young do ferrets have?

Answer 32

Altricial

(helpless)