I think all life is equal, but if...

I'd see a viviparous lizard and a planarian worm going to die and I had to save one of them, I would save the lizard... Because it's capable of more emotions and such than the planarian, which doesn't even have a brain. But I must say, I'd hate to choose. That something is different from us doesn't make it any less worthy. A planarian worm might not have a brain, but I would never claim its life to be worthless. They're beautiful and unique creatures. We have no idea of what is it like to be one, neither the right to say they would be worse. But choosing which one's life to save, to me, depends of the consequences of it... If I save a child instead of a goat, more people will be happy and relieved.