Shibas and Children

So, my brother in law and his stepson were here tonight and we had Sully out and Mikey put away (to reduce jelousy fighting). His stepson loved Sully and it was so nice, Sully does not jump on children he only jumps up on adults. Sully also sits by children and watches them. Has anyone else expericed their shibas taking to children? Wanting to be near the children and refusing to jump up on them? Sully has done this with multiple kids and I find it interesting since we have no children. Strange.....