No, the fat little boy with the guns is not serial killer John Wayne Gacy.

The earliest internet copy of this I could find appears on an eBay listing that ended August 29, 2013, as "75lb. Two Year Old 1940 WEIRD VINTAGE BIZARRE Press Photo " from a company that sells historic press photos. John Wayne Gacy was born in 1942, so this can't be him. The cutline on the back of the photo says that the baby is 2 years old, named Charles Hudson, son of Mr and Mrs Henry Hudson, and is in good health, and the dateline is Forth Worth, Texas, 3-8-40, (August 3, 1940) .

copy via Pinterest

 This is a photo that ran in newspapers - it used to be that chubbier infants were considered healthy and would often be entered in 'Bonny Baby' contests, such as in this British Pathé newsreel from 1931, which showed a baby that looks about one year old with the caption "Fair, fat - and forty - (pounds!)"

In early posts of this photo, no mention is made of Gacy, like this Got Funny Pictures entry for July 8, 2014, entitled A Little Tony Soprano in the Making or this entry from Imgur date September 15, 2016, If USA was i (sic) child it would be this little fat bastard .

It may be that someone thought that this looked like the adult Gacy, who was obese and had gray hair, but real photos of Gacy as a child show him as having much darker hair and being thin:

And unlike the fat baby, he looks very unhappy - he was abused physically by his father, according to his sister.

Squirrel tracks

Rusty comes in from the cold

Rusty jumps up on the fridge to warm up after coming in from a cold night

Random dog pics

Bongo visits a scientist, University of Guelph

 No dogs on the patio! Maybe Montreal or Toronto

Dog on balcony, Stratford, Ontario

Amaryllis

Amaryllis in the snow

The End of The Earth

The End of The Earth on my GPS. Really, there's no there there. Or nothing there. Or not there.

Amaryllis

New Year's