One must be careful with all animals, not just those in the wild.
For example, we have a loving, friendly "Rotten Shepherd" that's a 90 pound bundle of love. When I take her to school to pick up my grandson, she can sometimes get skittish with all the kids running around. Most of the time, she'll sit quietly while enjoying the attention lavished by kids wanting to pet her. I also take her on a half mile walk that calms her down.
We have our horseplay, which includes her growling while playing tug of war with me. She really enjoys dragging our grandson around the floor, too. However, he knows not to get too close to her, because you never know what can happen.
You just can never be sure with animals.