Would you rather kill 1 Baby or 100 Dogs? thought experiment

Here it was, the big one. We were siting in a hotel room in Disneyland, Paris - it had been a great day exploring the park and now the day was stretching out, it was almost 10'o'clock.

After having a meal at Planet Hollywood we had just returned to our hotel.

Our room- meant for 3, was full of every year eleven on the trip- about 11 of us in total and we were pretty much split. 

The question proposed, as the title says, was this: if you had to pick one of the options what would you pick- kill 100 dogs or 1 baby.

I cannot remember who brought this up but surprisingly, to me at least, the room was pretty split on this one.

Going in my view was this, if it was between a dog and a baby I would probably pick the baby,

Controversial? what would you pick