Pigs are omnivores, cows are not; they are herbivores. Pigs are smaller in size and stature than a cow and are lighter in weight. Pigs have litters of 3 to 10 piglets per birth, whereas a cow will usually only have one--sometimes two--calves per birth. Pigs love to root, cows love to graze. There are more but this is all that comes to mind at the moment.
Absolutely not.
Differences and similarities between ostrich and cow
cow
No, it's a pig!
There really is no difference other than size.
There are many differences between cow's and human's circulatory systems. The cow system has to work around 4 stomachs for example.
cow - beef pig - pork deer - venison
The difference between a heart and a human heart is one heart is a shape, and the other is the heart in our chest that pumps blood all throughout our body.
cow
No, a cow is a bovine, a pig is a swine.
NO
Absolutely nothing. A pig doesn't care nor cannot help a calving cow.