Weak chin

hey all,

we just notice today that our chin started to flex alot (big flexes almost seem like hes body is squash) and he sleep more have less strengh, he gone down 12 gram in 2 weeks.... we only notice the "weak" symptomes today...



any help? some ppl i know told me i should give him less treats maby (we give him around 1-1.5 a day)....