My Gypseros died and came back to life.

I was fighting a Gypseros and it randomly died earlier in the hunt than expected. Didn't give the death screen or rewards but just fell into its death position and the carve icon came up but wouldnt let me carve. It definitely wasn't sleeping because me and my Palico didn't have sleep weapons. When I tried to hit it, no damage would show either. Like thirty seconds pass and the thing springs up from the dead with a jank animation and starts beating my ass like it was just faking. What a strange occurrence or bug. That's never happened to me before.