Because they are strange.
Comedy depicts ludicrousness in order to emphasize the strange nature of humans.
yes.
he would act strange and wierd
rowan atkinson
To provide an accurate answer, I would need to know which specific act or literary work you are referring to, as "this act" is not specified. If you can provide the name of the play or text, I can summarize the strange occurrences reported in it.
some animals act rare when you give them kiwis :)
chimpanzees act like humans
That's an opinion. Some people think dogs don't act strange. Dogs are just being... dogs. It's what they do. Anyway, this question isn't specific.
it is because their emotional feeling that they act so strangely. Actually, i don't know that much
They act strange and try to make jokes when they are around you
because they have nothing better to so they act strange so people can give them attention
This a strange question, since how they act depend on what situation they are put in. If they're in a calm environment they will act calm. If they are put in a stressful environment they will act like they are stressed.