Which of the following animals can do self-injury when the noise level is too loud?

Please explain the term “barbering”. 

This is considered the proper restraint for giving an SQ injection.

Which of the following diseases is common in research animals when there is overcrowding and unsanitary conditions?

The  [answer1] gland is located in the rat’s eye and can secrete [answer2] tears.  When a rat is stressed or ill, an owner may see [answer3], the medical term for increased secretions of porphyrin.       SPELLING COUNTS!  

Baby mice are born altrical.

What anatomy is highlighted by the yellow arrow?

Describe the echogenicity, echotexture, and size of the liver using the image below:   The liver is: 

Portal vein blood flow in a normal patient should be _____________.

What disease/problem do you expect in this 3 year old rat?