cats

I had a similar experience once. Heard a yowling screech that suggested a fight going on in my back street. Went out and saw my cat sitting at the end of my wall looking into the street. Opened the gate and two cats were in the middle with a bunch of other cats sat on the walls around like feline fight club. All of their glowing eyes looked at me at the same time. I just picked up my cat and brought him inside.