Rat
The Brown Rat (Rattus norvegicus) has a larger body than the Black Rat (Rattus rattus)
The olfactory receptor genes map topographically onto the first relay station, a sheet of modules called glomeruli in the olfactory bulb. Up to 80% of the glomerular layer in the rat can be removed without significant effect on olfactory detection and discrimination (Bisulco and Slotnick 2003). If the remaining 20% of the glomeruli-and the olfactory receptor genes they represent-can subserve the functions of 1,100 genes, it implies that 350 genes in the human are more than enough to smell as well as a mouse. Source : http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=406401
Usually yes, but it depends on the size of the rat. My dad has seen a rat about the size of a long plank of wood and opossums are smaller than a long plank of wood, usually a few inches bigger than a regular rat. So usually yes, but unless you happen to see a rat bigger than an opossum, that rat has sure lived for a long time.
There are several differences between a rat and a human skeletal system. Some of them include the fact that the human system is more complex with multiple parts unlike that of the rat, the other difference is in their sizes and so much more.
a rat
Because a rat relies more on its sense of smell.
olfactory bulbs larger in sheep like the rat we dissected as well because of the need for heightened sense of smell for food, predators etc. these defense and survival mechanisms are more needed in sheep than humans.
A rat is a rodent and it is bigger than a mouse. However the largest rodent is a capybara and that is the size of a pig.
what is one human month to a rat
That all depends on what animal you're comparing it to. A human pancreas would certainly be bigger than say, a rat's. While an elephant's pancreas is larger than a human's.The human pancreas is approximately 6 in long.
The Brown Rat (Rattus norvegicus) has a larger body than the Black Rat (Rattus rattus)
Rats must have a good sense of smell in order to locate food.
The olfactory receptor genes map topographically onto the first relay station, a sheet of modules called glomeruli in the olfactory bulb. Up to 80% of the glomerular layer in the rat can be removed without significant effect on olfactory detection and discrimination (Bisulco and Slotnick 2003). If the remaining 20% of the glomeruli-and the olfactory receptor genes they represent-can subserve the functions of 1,100 genes, it implies that 350 genes in the human are more than enough to smell as well as a mouse. Source : http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=406401
Usually yes, but it depends on the size of the rat. My dad has seen a rat about the size of a long plank of wood and opossums are smaller than a long plank of wood, usually a few inches bigger than a regular rat. So usually yes, but unless you happen to see a rat bigger than an opossum, that rat has sure lived for a long time.
No, dumbo rats are much bigger than fancy rats. They are both very nice creatures though.
rat
Rats tend to be bigger and stronger.