That sounds very much like what happened to him, but his tank wasn't even heated, it was probably just a few degrees above room temperature due to the glass, so probably about 76 or 77 degrees, and he passed in the evening when the temperature would have dropped anyways (i turn the air cooler at night) but he did just flip on his back and seize like that. And I am assuming he was wild caught (just a little frog some of my friends had brought to me) so perhaps he had an underlying condition