why are animals like the buffalo so big if they only have a diet of grass?
541514
Pound for pound, there isnt anything to compare to meat (assuming of course you are adding in the fat, and the tasty, ever-surprising intestines and stomachs of the prey).  But, food for a carnivore is dangerous-you cant get fat and slow, you want to keep the meal frequencies to a minimum, and each meal comes with some exercise-thus big canivores only eat once or twice a week at best.  Herbivores eat for hours and hours every day.  No, the food is not highly nutritious, especially in terms of fat and protein content-but there is a whole lot of it, a long time to eat and digest it, and no worries about over-eating and getting fat, really.  You know, the eating patterns are why herbivores tend to be much more aggressive, dangerous animals that carnivores- Think bull moose, bull elephants, hippos, rhinocerous etc- They are much more aggressive and dangerous to be around than a corresponding lion or wolf.  Herbivores can afford to get quite injured, and still recover cause their food doesnt move around and try to get away.  A tiger breaks it's foot, or gets a terribly torm muscle, and it will likely starve, so large carnivores are generally very wary of getting into fights.
1140488
A goat is a "ruminant".  That means that it has 4 stomachs.
875899
I'd say because humans aren't camels...we don't store food that we can easily use for energy later.  Also, their stomachs are bigger, and probably there are a lot of psychological issues: they get hungry when somehing goes wrong or right...whatever it is that makes them want to eat so much.  And then some fat people just have bodies that won't process food correctly, no matter how much they eat.  Some probably eat junk food...Lots of reasons, I'm sure.
903805
Coz they have a lot of cows?
900893
Elephants eat peanuts in zoo's because that's generally the only place they can get them ,,,,  but other wises it's more or less a myth ,,,,  Elephants are vegetarians ,,,, They eat constantly and can consume as much as 400 pounds of food daily ,,,, It takes allot to sustain them so that's why they require a huge range or environment ,,,, Their size is just the nature of their species ,,,, The wild elephants range is constantly decreasing because of the clearing of their habitat and deforestation by man to make way for his farms ,,,,  As a result man and elephant are having a hard time co-existing with each other as time goes on and unless something is done it will mean an end to this wonderful and interesting creature ,,,,,
945461
The sheep/deer. These are herbivores and both ruminants. Digesting grass is tough work and you need a lot of intestine to do the work. The average human has a small intestine arouind 20 feet long. A horse, by comparison, has a digestive tract that is 100 feet long.
49428
The buffalo; they were nomadic people traveling with the herds. buffalo was their major source of protein and they used the animals for many other thing bones fur shelter clothing and weapons. That’s the sixth grade answer anyway
537451
Because animals don't have to accomplish as many tasks, so they can specialize on a few specific tasks and learn to perfect them. Humans take on a greater number of tasks, most of which are highly complex, so they can't specialize as easily.
1146022
There are many different kinds of animals in the world in order to survive. Each and every animal has their own habitat and according they consume food. Some are herbivorous and some are carnivorous. The food chain goes on to maintain ecological balance .For instance grass is eaten by grasshopper the later is eaten by a frog and the frog is eaten by a snake which is ultimately eaten by a hwak.
1042549
because they have gills that extract oxygen from the water, much like land animals have lungs that extract oxygen from the air.
856519
I can't answer - sorry. I don't know what the question is.  Carabao are big heavy buffaloes well adapted to living in swamps. There are any number of reasons why they might need to push harder on the ground at one time rather than some other time ( for example if they are standing in shallow water rather than up to their shoulders, less of their body weight would be bouyed up by the mass of water displaced). \n\nPush harder on the ground than what?
192733
Cows have a two stage digestive system, like many animals that eat grasses. Because they consume so much grass and it is so hard to chew, they first swallow it to a pouch above their stomach.  Bacteria begins to breakdown the grass, much like fruit ferments, in that pouch.  Once it softens enough to chew, and the cow will regurgitate the cud (food) from the pouch to its mouth, chew it and swallow it to their stomach where it is digested much like ours.\n\nWe, birds and fish all have much more efficient digestive systems and so don't need to consume as much.  Also our diet has much more variety and food value.
647001
Because energy is wasted everytime it is passed on from organism to organism, so it's just not efficient for an animal to eat a high up animal when the less high up animals have more energy.  Something would have to eat a lot of humans, for instance, to be full up.
109049
pigs used to be fed anything including human waste. so i guess that you could feed them scraps of wood just so they would have something to munch on. i know that you can feed cows sawdust but not for very long.
1105447
cos they r supposed to be big,, they eata lot and their body is initially big...so u cant help it
947078
As MissA excellently stated, cows (and other ruminants) require significant processing and digestion of cellulose rich material in order to garner nutrition from grass.\n\nEven with all that processing, they still only get some of the energy from the cellulose.  The rest gets passed through the system in the form of the rather high amount of poop that cows produce.\n\nHorses deal with it in another way, passing through vast quantities of low quality forage, getting the minimal amount of nutrition they can, and then passing it through quickly.  That's why horse poop is full of pretty much undigested grasses.  Elephants are the extreme end of this strategy, using massive quantities of forage, with very little nutrition per pound, but by eating so much of it, they're able to get enough energy to survive.\n\nSmaller herbivores, like rabbits, use other methods.  Rabbits practice what is known as refection, in which they actually eat their own feces.  Rather than horking it up as cud, they poop out little green pellets, eat them and send them for processing again.  The little brown pellets we see as rabbit raisins are actually the end result of several passes through the digestive system.\n\nTermites are the masters of cellulose breakdown, however.  They accomplish it with the help of endosymbiotic bacteria that are able to break apart the cellulose on a molecular level, turning it into its component sugars.  Termite guts are literally filled with these bacteria, and without them, the termites would starve.\n\nOur own digestive systems have evolved for an omnivorous diet.  We do pretty well with meat, grains, fruits, and veggies, but simply don't have the length and size of digestion chambers that would be required to break down cellulose.  If we did, we'd be built more like, well, like gorillas - with big, farty guts processing plant material all day.  Of course, some of us are closer to that ability than others already.
810734
Moss is hard to digest and has little nutritional value which is why most animals do not eat it, including us humanimals.