to find their way around cause their kinda blind
Ultrsound is cyclic pressure with a frequency higher than the upper limit of human hearing.
no
They tried to use it by tieing the female rats to the long black cable to raise the population of the rats of nimh
the men are going to use a knife to kill the rats?! JOKING! the men use a gas that can kill or cause them to faint/quizy
they use it for to keep cool
It is legal to use lab rats for research. Lab rats are only used for research and for making a cure for a deadly disease. It can't be used for anything else.
You will likely see the gestational sac and maybe the yolk sac.
Rats have been known to eat petunias and carnations. You could get a cat or use poison. If you have animals that go outside, do not use poison.
You use a 22. rifle
In the book "Mrs. Frisby and the Rats of NIMH," the rats learn to stockpile and gather food from the library books they have access to. They use their intelligence and knowledge gained from reading to survive and thrive in their environment.
Rats can be trained to identify their names but if you dont use the rat's name while with it usually they will not be able to identify it