I made the mistake of not using tongs with a redtail male once. (I couldn't find them)
O.M.G.
He overshot by a bit, "faster then a snake", he got me right into the soft part of the hand between thumb and fore finger. His head was a good size, so his upper jaw reached all across the top of my hand while his lower jaw was embedded in the palm of my hand. He teeth pierced one of the big veins on top of my hand. The bleeding was so severe that it pooled under my skin and within seconds (I kid you not) I had about a golf ball sized swelling on top of my hand, just blood under the skin, and some of it running down my arm.
They hit a LOT harder when they mean to grab food, rather then a defensive tag. It was shocking how fast it all happened, LOL. Of course, out of reflex I pulled back. Thankfully he let go, instead of trying to wrap my hand.
Now, I have to admit. That one hurt, lol.
Not only that, but it turned all colors of the rainbow over the next 2 weeks. The entire top of my hand was discolored. And a week after or so a couple of teeth made their way out of my palm...
Yeah, I'm not making that mistake EVER again.