Rat Intro

Question 1

Weight at maturity for rats

Answer 1

250-500 g

Question 2

Dental formula for rats

Answer 2

I 1/1 C 0/0 P 0/0 M 3/3

Question 3

2n chromosome number for rats

Answer 3

42

Question 4

True or false: Unlike mice rats have a gallbladder.

Answer 4

False

Question 5

Age at sexual maturity for rats

Answer 5

50-60 days

Question 6

Rat estrus cycle length

Answer 6

4-5 days cycle

Question 7

Rat gestation

Answer 7

20-22 days

Question 8

The scientific name for the red tear staining that can occur with rats is…

Answer 8

chromodacryorrhea

Question 9

Porphyrin is produced by what structure

Answer 9

Hardarian gland

Question 10

Maximum blood volume that can be be drawn safely

Answer 10

1% body weight every 2 weeks (3ml blood every 2 weeks for a 300 g rat)

Question 11

Daily water consumption for a rat

Answer 11

24-60 ml/day

Question 12

Daily food consumption for a rat

Answer 12

15-30 g/d

Question 13

Name the lesion

Answer 13

Malocclusion

Question 14

What environmental condition do you need to check in the room this rat come from?

Answer 14

Relative humidity, ringtail associated with RH of <20%

Question 15

Name that lump!

Answer 15

Mammary tumor

Question 16

Name that lump!

Answer 16

Zymbal gland tumor