A rat's sphincter is a muscular ring that helps control the entry and exit of substances from its digestive system. It regulates the passage of food and waste materials through the digestive tract.
The major organ systems of the rat include the digestive system, respiratory system, nervous system, circulatory system, skeletal system, muscular system, reproductive system, and endocrine system. Each of these systems performs specific functions to help the rat maintain homeostasis and carry out essential biological processes.
Openings for the rat to breath in and out.
allow sperm cells to mature,and produce testosterne,
The rat makes ratatouille for the big food critic. Also, the main character is a rat, and the name ratatouille has the word "rat" in it.
pump blood you a******
To help rats to breathe
The lung function of a rat is to take in oxygen you breath and take it to the blood. Then it releases the carbon dioxide from your body.
The rat king
they provide heat
To nurse baby rats.
If you are talking about the main rat, Remy, then it is Patton Oswalt