A. Treats are an easy reward for the majority of people and dogs. If food doesn't work you can use a toy for a reward.
Otherwise it comes down to you being engaging and making training fun. Use your voice. You may feel dumb sounding like an excited school girl pitch "oh!! Who's a good puppppy!!" But dogs really soak it up. I really recommend finding a good class who uses an excitable voice to help encourage the dogs to be excited.
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