Ruckus went through a Sharky phase. He'd chew your fingers, your shoes (even if you were wearing them), furniture, te wall, and so on. We kept correcting him and sticking chew toys in his mouth to redirect his need to nibble. He's about 15 months old now and has completely grown out of it. He will chew the occasional item left on the couch unattended, but he doesn't play bite anymore and I can finally buy nice furniture again!