well we ARE naturally herbivores. we have smaller stomaches than carnivores and have to eat more often than them. any more than 4 or 5 meals a day tho can't be good for your teeth. everytime you eat, your mouth gets acidic. make sure to always wash your mouth with water after eating to neutralize the acid.
how new are you new to the diet? i wouldn't worry about your grazing if you've only been raw a few weeks or a few months. your body is adjusting. it is used to feeling full from cooked food, not raw food, so you constantly feel hungry. fullness from cooked and raw definately feels different and you are digesting raw food more quickly.
when you 1st start the raw diet, you'll want to eat more and that's normal. the good thing (besides how healthy raw is!!) is that your body is dissolving mucous caused by all that cooked food. as more and more mucous from your intestines dissolves, your body will be able to better assimilate nutrients and then you won't feel the urge to eat as much.
when we are hungry it is either because our stomach is completely empty or we are craving nutrients. on cooked food, we definitely don't get enough nutrients, however the food takes so much longer to digest.
so as more and more mucous dissolves, you'll be able to space your meals more.
i know this from personal experience. i was 100% raw for 5 1/2 months once. that's the longest i've gone. it was so easy to fast. i even did dry fasts (no food or even water) and i did not feel hungry at all! before i went raw and also at the beginning of being raw, i would eat a lot tho. but after being raw for awhile, you can eat less and feel satisfied because your body can absorb more nutrients since your intestines aren't covered with mucous that prevents nutrients from getting through.
not only do i know this from personal experience, but i also read about it in some raw food books. "12 steps to raw foods" and also a bit of info i got from david wolfe's book "eating for beauty"
to speed up the process of getting rid of all that mucous, eat lots of mucous dissolving foods like radishes and lemon juice. black radishes are the best, but red radishes are great, too. and you can't go wrong with freshly squeezed juices!
drink lots of water, too, and stay hydrated. being dehydrated can also make you hungry.
don't get discouraged. depending how toxic you were before going raw, it could take more or less time to cleanse your intestines. but grazing raw all day is still healthier than eating cooked food. as long as your grazing period continues tho, just make sure to take really good care of your teeth. i'd recommend toothsoap. anything in the grocery store won't do any good. i've done a lot of research online about taking care of your teeth because when i went raw, i felt as if my teeth were getting weak either from too much citrus or all those larabars. I learned that some of the nasty things they put in toothpaste actually prevent your teeth from repairing themselves. and yes on the raw diet your teeth can repair themselves! you can find some toothsoap here.
http://www.fredericpatenaude.com/toothsoap.html
or at least just use plain baking soda which is what i switched to years ago. i don't even trust the "health" brand toothpastes. still too many ingredients. you can also sign up to get free raw newsletters from that site. i get lots of advice and motivation from them.
if you don't think it's too gross and if you can afford it once in awhile, i'd also try getting some colonics for much faster results in clearing mucous out of your body. they're great for when you're fasting, too.
hope you got somethin' from all this. basically, just keep on grazing and your body will adjust and eventually you'll get used to eating fewer meals. i wish you lots of luck and you're already ahead of me cuz i've fallen off the wagon. stay on and stay motivated