Because cows are bigger than us and they have a larger digestive system than we do.
No.
Your missing a part in your question, there is no answer at the moment.
Because everything in a Human is bigger than a sheep's because humans are bigger than sheep.
no
About but not quite. guinea pigs brains are bigger than poop.
No
a sheep
yes
A sheeps heart is slightly bigger than a sheeps kidney.
Definitely not. Cows (being cattle) are much smaller and lighter than any species of elephant.
the only difference between their brains is the size because most humans have bigger skulls than dogs so that allows them to have a bigger brain and the bigger the brain the more your brain absorbs the information.