Check this out:
Here is a static picture released by NASA that you can download in a large size to see clearly.
So, I can think of three options to explain this. First, NASA secretly sent a round tailed ground squirrel to Mars on the Curiosity rover and then released it there. Second, the Curiosity rover is not on Mars at all and the entire Mars lander program is fake, something filmed the Mojave Desert (where the ground squirrel is native), and this is proof that the Mars program is bogus. Third, it is nothing but a flippin’ rock (on Mars) with a couple of shadows that the human mind desperately tries to characterize as familiar.
You can probably guess my vote.

