I don’t know if the explanation of protecting its garden is true, but this video of a tortoise chasing and attacking cats does present a bizarre role reversal.

And while we’re at it, this one shows a turtle pestering a cat.  The explanation is that the turtle loves the cat, so perhaps he just wants to play.  If that first video is any indication, however, it could also be something far more sinister.

Tangled Bank #79 offers an extensive collection of science writing from across the spectrum of disciplines.  Check it out.

How to pet a cow.  It apparently makes a great deal of difference where and how you pet them, and their physiological reactions are quite telling.

Take a look at this collection of lightning strike images.  Spectacular indeed…