Which blood collection site is typically utilized for guinea pigs?

Guinea pigs typically have the heart as a common site for blood collection, particularly in research and clinical settings. Collecting blood from the heart allows for larger volumes of blood to be taken at once and is suitable for various laboratory tests. This method is also preferred when a rapid collection is necessary, or when other sites might not be easily accessible due to the small size of the animal.

Though other sites like the jugular vein, femoral vein, and cephalic vein might be options for larger rodents or other species, they are not as commonly used in guinea pigs due to anatomical considerations and the stress it may cause the animal. The heart allows for a more straightforward technique while minimizing external complications.