Parents know—at six months old or so, everything goes into the mouth! Fortunately, the teether included here can—and by this age, babies can reach for it on their own using just one hand. And at the same time, kids will enjoy looking at large photographs of other babies teething on a rattle, bagel, biscuit, their own fingers and feet, a book, and a toy.Parents know—at six months old or so, everything goes into the mouth! Fortunately, the teether included here can—and by this age, babies can reach for it on their own using just one hand. And at the same time, kids will enjoy looking at large photographs of other babies teething on a rattle, bagel, biscuit, their own fingers and feet, a book, and a toy.