While it's a defense mechanism that they are good at, I can tell you that in captivity this is not something you happen to see very often.
I have owned and work with hognose for 6 years now and I have only witness them doing this 3 times (twice from the same animal), in each case they were very young (hatchling out of the egg and same later that week and hatchling upon being received), I have never had any of my adult doing this.
Not much to be freaked out about but something very funny to watch
Reply With Quote