We've heard of sibling rivalries, but this one takes the cake!
An MRI video has captured a pair of fetuses literally fighting each other!
The "cinematic MRI" allows doctors and, if it is uploaded, any internet user to witness twins vie for space in utero.
And these two are seriously going at it!
We hope these eventual babes get along better in their baby room than they do in their mother's womb.
Ch-ch-check it out by clicking PLAY directly (above) !!!