One day, a student noticed something strange: One of the rats in the group trained to expect positive experiences had its tail straight up with a crook at the end, resembling the handle of an old ...

Techniques for blood collection from the rat include puncture of the heart, retro-orbital plexus, jugular vein, saphenous vein, tail blood vessels, carotid artery, abdominal aorta, and vena cava.

First, she submerges the rat's tail in a cup of warm water (50°C ... Either applying lidocaine directly on the cut or waiting a few more minutes for the initial dose of lidocaine to take full ...

DESCRIPTION: San Bernardino kangaroo rats have yellow to dusky brown fur above, with white undersides. Their long tails have dark brown stripes, and there is a dark line on each side of their noses.