Opie & Sophie are 3 1/2 yrs old, we brought them both home when they were 8 wks old and have played only with these two toys. There are hundreds of dollars of toys in the hugh basket that go totally ignored, instead Op's has 1 of dads socks & So has a small fur bone.
We have had to replace the sock many times, but we have to first put the old one in a new sock and play for some time before we throw the old one away.
But Soph's bone, can't be replaced, have gotten several that look similar, so we save the old one for very special playing and when it comes out she is soooooo overjoyed to see her old friend, she carries it around and it gives her "bone beard".....lololololo