Are mt cats psychic,very strange happenings?

last week i was in bed,i had one cat on the bottom of the bed then my other decided to join me.ten minutes later they were both staring at the walls like they were watching something,they were st airing at different walls looking right into the wall,looking up at the ceiling ,i got out of bed put the light on thought there might be a spider or something,nothing there put the light off and went to sleep never thought anything else of it.now last night the same happened again with one cat ,she was proper watching something ,jumping off the window on to the bed looking in other rooms looking up at the ceiling,was really weird .i told my husband and son to come and look,by this time she was looking at the wall her ears were right back and her tail was wagging ,she does that when she is angry or mad.i wasn't scared by what happened,it was a very weird experience,as both of my cats were doing it the other night,there was definitely nothing there,has anyone had any experiences like that or any explanations cheers emma xxxxxxx