Cavia porcellus

Guinea Pig

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As the OED tells us: a tailless dumpy rodent, now found only in captivity, or as a subject for scientific research (and as food in S America). The guinea pig is therefore, like the dromedary and domestic cattle, a species now represented only by the domestic variety, but unlike them, there may never have been a wild population, the guinea pig having been derived from similar S. American species such as C. tschudii.

Guinea pig skull lateral view

1. Guinea Pig skull, lateral view
 
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Cavia porcellus skull ventral view

2. Guinea Pig skull, ventral view
 
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Cavia porcellus lower jaw

3. Guinea Pig lower jaw
 
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Cavia porcellus skull

4. I was surprised at the length of this guinea pig skull found in a garden in Essex, considering the length of the average guinea pig.

Overall length: 73.2mm

Overall width: 42.4mm
Photo & measurements courtesy Tony Banfield.

Internet Resources

Standard references :
Wilson & Reeder's Taxonomic List
University of Michigan Animal Diversity Web

Taxonomy:
Order - Rodentia (rodents)
Suborder - Hystricomorpha (porcupine-like)
Family - Caviidae (cavies)

Scientific Name:
Cavia "rat" (from Tupi)
porcellus "little pig" (Latin)

Dental Formula
U 1.0.1.3 - L 1.0.1.3

Measurements:  (defined)
Overall length 65.0mm
Overall width 36.2mm(more)

Collection Data
Stage - Adult
Sex - F
Area collected - Lancashire
Date collected - Nov. 2000
Source - Pet
Collector - E. Brown
Collection ref. - 00.052

 

Skull Measurements (defined)

all measurements in mm

Specimen

CB

ZW

JL

IW

PC

NL

UT

Sex

Comments

00.052

61.7

36.2

48.0

12.7

21.2

15.6

F