Sibling rivalry can begin even before birth and modern medicine has proven it. Researchers in London have footage of twins fighting for legroom in the womb.

Another day, same result for the Twins. But in this one, at the very least, they showed plenty of life before suffering the same fate.

A fight broke out between two spectators at the San Diego Padres' game against the Minnesota Twins at Petco Park Tuesday night.

When they're not screaming and fighting for Mum's attention, the twins find plenty of other things to fight about. They punch, kick, bite and sometimes draw blood.

Twins fight back but fall yet again to Milwaukee Brewers Rally falls just short as Bader stranded at second in ninth inning ...