Roof rat droppings are very similar to the house mouse but much thicker.
Roof rat droppings vs mouse droppings.
When rat droppings are fresh they are soft and dark and feature a shiny wet surface.
Rat droppings are bigger than mouse droppings and measure around 3 4 th of an inch in length and around 1 8 th of an inch diametrically.
Norway rat poop droppings norway rat poop droppings are even thicker that the roof rats and typically much shorter than field mice and roof rats.
Look at the below photos.
Droppings are typically found around where these creatures eat.
Droppings from the norway rat closest to the penny is the largest of the three and has blunt ends.
But a rat pellet is way bigger much fatter with rounded ends.
Rodent feces can carry harmful bacteria diseases and viruses including the hantavirus.
Droppings from the roof rat middle is a little smaller than the poop from a norway rat and has tapered ends.
They are shaped like a sausage curved with ends that are rounded and pointy.
With that being said the easiest way to distinguish between rat and mouse droppings is to analyze the size of the droppings and their shape.
In comparison to rat droppings they are small with either one end pointed or both ends pointed.
They may be of different forms or sizes.
Mouse poop far right is much much smaller than rat droppings.
They are different sizes.
Typically the length will still be the same but the thickness will be much greater than the typical field mouse.
Medical articles and infographics.
You can see that a house mouse turd is like a small grain of rice even smaller than that often with pointy ends.