Silver monkeys that were about 3-4 feet tall.

I am trying to find out if anyone has ever reported what I saw.
I was 5 years old at the time.  I had an astounding memory, so I know this wasn’t made up or imagined.  I was spending the summer at my aunt and uncle’s summer house on Pretty Lake in Dousman, WI.  The property bordered the lagoon portion of the lake.
I was playing in the sand at the front of the house which was parallel to the lagoon.  At some point, I got up and walked to the side of the house that was facing away from the lake.  I saw about 5 or 6 "things" standing on top of each other trying to reach the bathroom window.  The window was just a small opening that opened outwards and opened from the top, not the bottom.  I was shocked that these "silver monkeys" were trying to get into the house.  I started running to go into the house and tell my aunt, and then everything went blank.
I know that I never did tell her about the silver monkeys because in the evening, she was giving me a bath and I asked her to close the window because I did not want the silver monkeys to come in.  She said there were no silver monkeys.  That night I wet the bed.
I had several more unusual experiences that summer.
Witness indicates that the date of the event is approximate.  PD