They don't, Barkingdog. That's why mom was so upset when she couldn't get them nurse toward the end there--where she's dragging them toward her!
They do seem to have the snuggling and napping part down pat, though. That must have made her happy!
"We are--each of us--dying; it's how we live in the meantime that makes the difference."
"It's not what you gather, but what you scatter that tells what kind of life you have lived!"
"Be kinder than necessary, for everyone you meet is fighting some kind of battle."