How to train my dog to not be afraid or aggressive towards big dogs?

Gradual desensitization, correction of negative behaviors and patience are required. Slowly introduce him to one pup at a time. Correct any aggression immediately and praise/reward good behaviors. As he acclimates to one pup, introduce him to another (slowly) then another and another. Be consistent in training and corrections. A pheromone product, such as the Adaptil collar, may decrease and anxiety or aggression. A structured puppy socialization class may also be of benefit. Contact the local Petco for a list of offerings.

Food aggression is common, especially in dogs that have not been properly or adequately socialized. You can try gradually desensitizing her to the presence of other dogs during mealtime. Do this for very short periods of time, then gradually increase the time and decrease the distance. Correct any negative behavior immediately and praise/reward compliance consistently. If she gets too aggressive, separate her to prevent fights or injury. A pheromone product, such as the Adaptil collar, may help decrease any anxiety or aggression during mealtimes and other times.

A gradual introduction would be recommended. Separate them for a few days, then begin anew. Jackson may eventually become acclimated and accepting of the new dog, but it could take time. Consider a pheromone product, such as the Adaptil collar or DAP diffuser, to decrease any anxiety or aggression. Correct any aggressive behavior immediately and praise and reward good behavior.

Any introduction should be done gradually and on "neutral" ground. You can use a pheromone product such as an Adaptil collar to decrease anxiety or aggression. Introductions should start with Max being able to hear and smell a new dog but not see him. This can be done a friend's house or perhaps a family member's home. Again, some place neutral to both dogs. Once he is acclimated, he should be able to see the new dog but have no physical contact. This can be done using the fence at a dog park. Eventually, you will be able to physically introduce Max to the dog. Use a leash on both dogs for safety and muzzles if necessary. Go slowly, don't force him but correct any negative or aggressive behaviors immediately. Praise and reward him as he progresses.

Have her spayed. This will decrease hormones which can drive certain behaviors. Slowly acclimate Panda to one dog, then another and another. Do this on "neutral" ground and on leash. Correct any aggressive behaviors immediately. Use praise and small rewards as she progresses. The use of a pheromone product, such as the Adaptil collar, may also help to ease her anxiety/aggression.

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.

Separate them for a few days then gradually reintroduce them. First with a door between them so they can hear and smell one another then separated so they can see but not reach one another and finally a supervised physical introduction. Use leash, collars and muzzles if necessary. Pheromone products such as the Adaptil collar or DAP plug in diffuser may decrease any anxiety or aggression. Provide adequate numbers of bowls, beds and toys to prevent food aggression or resource protection.