Dripleafs drops Sitting wolfs

I was playing around with the dripleaf plants while sneaking, standing and jumping. When I thought about how wolfs sit when you tell them to. Therefore I teleported a sitting dog onto a dripleaf plant, and it fell down anyway. I do not know if this is a bug, but it just seams weird that sneaking players gets accepted by dripleafs when loyal dogs don't.

Sincerely M_K_J_