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Minimal Space Requirements for Animal Caging
The following information was prepared by the Committee on Care and Use of Laboratory Animals of the Institute of Laboratory Animal Resources Commission on Life Sciences - National Research Council

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Minimum Space Requirements for Laboratory Animals

Animal

Weight

Housing

Floor Area/Animal

Height

Mice

grams

 

sq. in.

sq. cm.

in.

cm.

<10

Cage

6.0

38.71

5

12.70

10-15

8.0

51.62

15-25

12.0

77.42

>25

>15.0

96.78

Rats

grams

 

sq. in.

sq. cm.

in.

cm.

<100

Cage

17.0

109.96

7

17.78

100-200

23.0

148.40

200-300

29.0

187.11

300-400

40.0

258.08

400-500

60.0

387.12

>500

>70.0

451.64

Hamsters

grams

 

sq. in.

sq. cm.

in.

cm.

<60

Cage

10.0

64.52

6

15.24

60-80

13.0

83.88

80-100

16.0

103.23

>100

>19.0

122.59

Guinea Pigs

grams

 

sq. in.

sq. cm.

in.

cm.

<=350

Cage

60.0

387.12

7

17.78

>350

>101.0

651.65

Rabbits

kilograms

 

sq. ft.

sq. m.

in.

cm.

<2

Cage

1.5

0.14

14

35.56

2-4

3.0

0.28

4-5.4

4.0

0.37

>5.4

>5.0

0.46

Cats

kilograms

 

sq. ft.

sq. m.

in.

cm.

<=4

Cage

3.0

0.28

24

60.96

>4

>4.0

0.37

Dogs

kilograms

 

sq. ft.

sq. m.

in.

cm.

<15

Pen/Run

8.0

0.74

-

-

15-30

12.1

1.12

>30

>24.0

2.23

<15

Cage

8.0

0.74

32

81.28

15-30

 

12.1

1.12

36

91.44

Non-human Primates

kilograms

 

sq. ft.

sq. m.

in.

cm.

Group 1

<1

Cage

1.6

0.15

20

50.80

Group 2

1-3

3.0

0.28

30

78.20

Group 3

3-10

4.3

0.40

30

78.20

Group 4

10-15

6.0

0.56

32

81.28

Group 5

15-25

8.0

0.74

36

91.44

Group 6

25-30

10.0

0.93

46

116.84

Group 7

>30

15.0

1.40

46

116.84

Pigeons

 

 

sq. ft.

sq. m.

 

 

-

Cage

0.8

0.074

see note below *

Quail

 

 

sq. ft.

sq. m.

 

 

-

Cage

0.25

0.023

see note below *

Chickens

kilograms

 

sq. ft.

sq. m.

 

 

<0.25

Cage

0.25

0.023

*Sufficient headroom
for birds to stand erect.

0.25-0.5

0.50

0.046

0.5-1.5

1.00

0.093

1.5-3

2.00

0.186

>3

>3.00

0.285
Reference: Guide for the Care and Use of Laboratory Animals, U.S. Department of Health and Human Services,
Public Health Service, National Institutes of Health, NIH Publication, revised 1996.
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