Trap the attic since it's almost always a roof rat and that is where he will be almost all day until it is quiet, then it will come down to eat at night. Check the structure to see how it got in and seal after you eliminate.
mouse
cat
It's all part of the grand design of the food chain: the bigger fish eats the smaller fish. The dog eats the cat. The cat eats the mouse. The mouse eats the grain. The grain eats nutrients from the soil. The soil is rich in nutrients because of a decomposing dog. Or cat. Or mouse, even. Thus, we can conclude: the worm is on top of them all in the food chain !
A flying cat bat
The mouse is dead... cats will usually play with the mouse until they kill it then eat it
Tertiary consumer
corn is at the bottom which is the producer, then the mouse and cricket eat the corn, cat and snake eat the mouse, blubird eats the cricket, and the hawk is at the top of the foodchain and the hawk eats the bluebird, snake, and the cat
Alot of animals will eat a house mouse. The cat, maybe the dog, also Igunas, and snakes.
Yes, it can harm or kill the cat if it eats a mouse that has been poisoned. The poison used to kill the mouse can also be toxic to the cat if ingested. It's important to take precautions to prevent cats from consuming poisoned prey.
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This is a question on trophic levels. The grass is the primary producer, the mouse would be the primary consumer; it is a herbivore. The cat would be the secondary consumer. Im pretty sure some lions eat mice and grass. Lions are cats