Is it normal that animals chase me

ever since I was young animals chase me, the first time it happened I was about four and I went into a petting farm and a sheep rammed me in the stomach.
When I was about 9 a goat jumped a fence and chased me round the field, there were plenty of people there but it was only interested in me.
when I was in my 20's I crossed a field that is used as a public path and got chased by a 2-tonne bull, the farmer moved the bull to a field about a mile away and he still tried to get me.
The most recent incident happened at Christmas when the School my children are at brought in reindeer as a treat for the kids, up until this point my Husband didn't believe that animals chase me until he saw it for himself, out of a whole group of parents the deer got aggressive towards me, I didn't provoke the deer or even make a noise i was just standing there.
Why does this happen to me and does any one else have this problem.