Amale mouse housed alone in a home cage will readily attack a male mouse placed into the home cage, but will not attack a female mouse. which of the following is a key factor as to whether the resident male mouse decides to attack or not attack the strange male mouse?

The mouse should be able to detect male pheromones .

Explanation:

The communication in case of many animals occur with the help of chemicals known as pheromones. Pheromones are released for the mating purpose and in case of any danger.

Mouse are known to release the pheromones within and the opposite sex. The attack on the male mouse by another strange mouse will depend on the type of pheromones released by the mouse. If the pheromones is similar to the mouse, he will not attack the other male mouse but the strange pheromones will result in the attack on the mouse.

Thus, the answer is mouse should be able to detect male pheromones .

depends where it is? i got mine on my arm and from 1-10 it was a 3 different spots react differently

i think the answer is strength