Generally speaking, don't assume that just because you are
going to an official and popular camping site that animals won't ever be
around. They can and do visit camping sites - even busy ones - so keep be
prepared.
As a rule, most experts say that non domesticated animals
are afraid of people, or at the very least prefer to avoid humans when
possible. It may not be so much a matter of fear as it is a matter of not
wanting the hassle of dealing with us. Like water, wild animals will often move
along the path of least resistance, and humans often represent a bit of
resistance to animals in the wild.
If an animal approaches your campsite, it is good practice
to never feed them. Not only is this good for you in that it will give the
animal less reason to come any closer (and come back for repeat visits), but it
is also good for the animal, in that it helps keep its natural instinct and
food finding skills sharp.
Some animals may simply decide that they want to take your
food if they see it, or forage around your campsite. To avoid this and the attendant
consequences, make sure to always store your food in an animal proof container.
If these are not available, store your food in your vehicle or as many outdoors
enthusiast do, hang it on a tree limp. Never, under any circumstances, leave
any food in your tents, sleeping backs, or other portable shelters. Most animal
will smell the food and find a way to get it - usually damaging your gear in
the process, or worse, damaging you.