My new dog barks aggressively at people. Is she scared or possessive?

Gradually introduce her to one stranger at a time. Begin with very short visits/exposures. Increase the time as she acclimates. Introduce more people as she accepts them. Offer praise and reward after each episode. A pheromone product, such as the Adaptil collar which can be worn when out or the DAP plug in diffuser to be used at home, may decrease any anxiety.

1) He may be apprehensive or suspicious at first but eventually accepts the person as a non-threat. Try to expose him to different people and places. Do this gradually so as to not overwhelm him. A pheromone product, such as the Adaptil collar, may decrease any anxiety. Remove him from any negative stimuli or stressful situations before he escalates. Praise good behavior consistently. 2) Whining is the way he lets you know he is unsure or fearful of something or he wants it. It may precede the bark. 3) It may be a preference or he may have a bit of anxiety when you're gone. 4) Not unless you have an issue with it or if he does it at inappropriate times. He is showing you affection. Enjoy!

Introduce her, gradually, to one dog then another and another. Do this in a neutral area, such as a dog park or field. Correct negative behavior/responses immediately and praise/reward good behavior. Use a pheromone product, such as the Adaptil collar, to help decrease any anxiety.Given her age, get her enrolled in an obedience class and puppy socialization classes.

Consider a pheromone product, such as the Adaptil collar, to help decrease any anxiety. Next, expose her to a "new" person forever increasing periods of time. Praise and reward her as she progresses. It will take time and consistency, so keep at it but don't force her to move on if she gets too worked up.

Give him some time to acclimate. A pheromone product, such as the Adaptil collar or DAP plug in diffuser, may decrease any anxiety. Consider short visits to a dog park or short walks to get him further acclimated. Praise and reward him as he progresses, but correct any negative behavior immediately. If you need help, consider an obedience or socialization program. The local Petco may offer one or both.

It appears Peaches is very protective of you. Slowly acclimate her to one person being near you at a time. Do this in a neutral area until she is accepting before trying it indoors on her "turf". Praise and reward her as she progresses. Correct any aggressive behavior immediately. You may need the help of a certified trainer to provide one on one assistance. Pheromone products such as the Adaptil collar or DAP diffuser may also decrease aggressive behavior and anxiety.

Gradually introduce her to one person at a time. Do this in a neutral location such as a park. Begin with a short intro from a distance and gradually increase the time while closing the distance. Correct any negative behavior immediately and praise good behavior. End each session with a small reward. As she acclimates to one person, add another then another. Take her to as many public places as possible as well. This will acclimate her further to people and crowds. The use of a pheromone product, such as the Adaptil collar, may help decrease any anxiety. This will take time and patience. Do not rush or force her to meet people, especially if she is trying to run away. Give her a break when this happens and try again once she settles down.