Walmart is in a heap of trouble after selling a little girl’s Halloween costume called the “Naughty Leopard.”

And now, here's your NEW Walmart Halloween costume scandal.

Someone noticed they're selling a costume for boys as young as age seven called the demented doctor.

It features a blood-spattered lab coat . . . the coat's torn and has buckles, almost like a straight jacket . . . and a blood-red mask with a crazed expression.  Oh, and in the photo, they also show the kid holding a huge syringe.

It's hard to imagine a seven-year-old wearing it to school next month and not getting in trouble . . .especially for the syringe.

But so far the costume is still on sale at Walmart and online, for $20.