In extreme cases it might be felony but in reality no d.a. will charge a hunter with a felony if all they are doing is getting dogs.
I wouldn't get too caught up in believing that. You cross a fence with a firearm and the situation changes in a hurry. I was witness to a friend (who you know) who stepped over a fenceline with a shotgun in hand to retrieve a dove which had fallen on the other side. Landowner called the law and a felony charge was filed. He beat the rap, but not before about $3,000 in lawyer fees, etc, etc.
Just don't get yourself in that situation and you don't have to worry about it. I carry a pistol at all times when hunting, but if I must cross a property line it stays behind.
