Not necessarily. Look up the discovery of pulsars. (Not from Mars, but YOUKNOWWHATIMEAN)
Yes, quite. More to the fucking point, sheep have heartbeats. Are these people vegans? No? I seem to recall Sarah Palin is pro-hunting of things with heartbeats and yet anti-abortion, so she seems not to class heartbeats as relevant.
So, you know; sit on your checkmate and spin, you pack of raging fucksticks.