YOU can't MAKE A DOG BARK!!
You train a dog to bark.
To train your dog, you don't need treats. What I do...
Go crazy. Jump around, spin around...just go crazy in front of your dog. He/she might bark of excitement. Praise him/her by petting her/him and saying, "Good job! Bark!"
Hopefully you … Read more

A Boxador (Lab and boxer mix) can go up to 250 pounds when they are around an adult. They are pretty big!

It depends. When somebody comes over, a nervous dog might hide because he/she is not used to the enviroment. Not even a person.  When that happens: Try taking your dog for a walk. Bring water, food,  leash, collar, and even bring treats (when your dog is being social and good.) Go to a quiet place, like … Read more