Around 16-20 weeks they hit an awkward stage. Their fur gets thinner, their legs get longer, they look skinny with scrawny tails. Their coloring and spots change some. They are very active, wanting to run and play --coming back for loving once they are tired. They are teething a lot at this stage and need an environment free of shoes, electrical cords and children's toys; expect to find a tooth or two lying around. Their bladders have matured and they should be able to go most if not all night without an accident. The puppy's ears should now be up fully (if they are not, you have a Phalene and not a Papillon), although they may have gone through several stages where they'll go up or down (not always both ears at the same time).
By time they are 10 months, they’ll start getting their 'adult coat'. It comes in rich, full and gorgeous. The Papillon will start to calm down some and you’ll notice their tail getting fuller. They'll have reached their full size between 7-12 months and will continue to grow in beauty and grace. They still enjoy a good chew toy, but should be over the worst of their teething. The Papillon will start some fringe, but it often doesn’t come in full until they are 2-3 years old. The adult Papillon is elegant and graceful gaining attention where ever they go. They should be loyal but friendly and an excellent companion.
Please understand, I don't offer my 'older puppies' on SALE because they are not worth as much, but because they are diamonds in the rough and you need to have a bit of faith to see their true beauty. They will become a beautiful, polished 'butterfly' dog that is loyal and faithful to the end.