We have a 5-month-old puppy with a biting habit.
She is a Ridgeback/Belgian Shepherd cross. The Belgian has a reputation for being dominant and stubborn, and our puppy is already large and will be around 50kg or more when full-grown.
She has a habit of biting legs and hands when running and excited. Not full bites, but hard nips that cause bruising and sometimes draw blood.
As we have a 92-year-old lady living with us, this must stop.
We have been using vocal commands, smacking with a thong, and ignoring/shunning the dog afterwards for a few minutes, showing that it's not acceptable behaviour in our pack.
The problem is that she is fast and strong, a lot of the time it's not possible to physically correct her immediately.
I'm hoping that a shock collar will work, constantly shouting and running after the dog trying to smack her is not working, she thinks it's part of the game.
Can any experienced persons here give some advice?