Julz

My BC pup Dymin,is too excitible and with she sees you,she jumps on me.She does this with no one else but me.It is because she is happy but sometimes she end up biting and she doesn't realise she's doing this.I have tried chaining her up,making her sit,and saying "bad dog".She gets it for a while, but the next time she sees me, sh goes nuts again.Please helpme on what to do!