This morning I went in the pen to get the food bowl, which I do twice a day everyday. they pigs normally just sniff me and make my legs dirty. but today Stella ( my female) actually put my ankle in her mouth. she never bit down- just put her around me. should I be worried that she is going to bite the next time- or is this pig talk for hello? I pet them, talk to them and am kind- so, i wouldn't expect it.