A Frog-Rat-Bat-Spider-Thing

I ... don't really know what this is. It appeared one day on the sides of my lecture notes I took in university and that's about it for a description. Not that that's a real excuse though since all the crappy coloured stuff I uploaded, and intend to upload maybe, are from my lecture notes. Since I only seem to draw during lectures.

The 'original linework' (HoHo, how professional that sounds, I almost trick myself here) from this particular piece of detritus is from pretty much exactly one year and 22 days ago, thermodynamics, something about enthalpy of vaporization and Clausius-Clapeyron equation.

I bet that information is highly valuable. Almost as much as this picture.