How to stop my dog from jumping and mouthing people when excited?

This is very normal behavior for a puppy this age - jumping up is a natural greeting behavior for dogs, and biting and mouthing are how puppies explore the world. You will need to be patient and consistent to teach him what you want him to do. When people come to the house, he needs to be on a leash or in another room behind a baby gate until he calms down. Praise and reward with treats when he keeps all four feet on the floor, or teach him to sit for greetings. Make sure that he has a variety of different toys to provide an appropriate outlet for this behavior - long floppy rope or fleece toys for tugging, plush toys for biting and carrying, and smaller toys or balls for chasing and fetching. Providing lots of things to chew on can also help, especially when you are busy or have company over - try things like bully sticks, cow or pig ears, rawhide chews, and puzzle toys like a Kong stuffed with peanut butter. If these things don't help, I would recommend getting in touch with a good reward-based trainer who can work with you in person to teach more appropriate greeting behavior. You can search for a qualified trainer in your area here: www.ccpdt.org

Thanks for using Petco Pet Education Center, formerly Petcoach! Usually these behaviors can be corrected but this usually requires in person training by a qualified dog trainer. I recommend you consider contacting a qualified dog trainer to work with you in person. Good luck and have a good day!

Jumping on people to greet them is a very common and normal dog behavior - but since most humans don't appreciate it, it's definitely a good idea to teach him not to do this :) I would recommend keeping Scooby on-leash when he meets people, so that you can prevent him from continuing to practice this behavior. Stand at a distance from the person, and ask him to sit - reward with a treat when he does. Then move a bit closer, and ask him to sit again. If he gets too excited, just back up to where he can be calm again and focus, then try again. Eventually, with practice, you should be able to walk him right up to a person and ask him to sit before they pet him. If you have trouble doing this, you may want to find a good reward-based trainer in your area who can work with you in person. You can search for a qualified trainer in your area here: www.ccpdt.org

In terms of Bruin's greeting when you walk in the door, the best way to prevent her from nipping at your hands or ankles would be to only acknowledge her on your terms. While everyone is happy and excited to see their dog when they get home, in cases such as these where there is a behavior problem, sometimes our interactions with our pets must be altered. When you walk in the house for the next few days, I would ask that you consider not playing into her excitement. Instead, do not pet her or give her attention until she has calmed and settled down. Once settled, you should reward her with love and attention. If she still nibbles or bites, cease giving attention and walk away. Alternatively, you can have a toy in another hand and give her the toy to play with. If she takes it, reward her profusely with praise and/or treats. Since she is a Border Collie, she will likely pick up on things quite quickly. Training her to not become excited and/or nervous around guests will be a more difficult task. At least for the near future, I would recommend keeping her on leash when guests first enter the house and for the first several minutes they are present. Once off leash, instruct your guests not to acknowledge her if she is overly pushy or nibbling. If she settles down, your guest should reward her similarly as you were. It is all about repetition and consistency with behavior. I hope you and Bruin figure things out.

One way to train him to behave when visitors come is to get him a dog mat. Place it where he can see visitors but not near the door or where they will be sitting. Train him to go to his mat on the command "MAT!" Then teach him to stay there until you release him (use a release word such as "okay" to let him know his stay is over). Enlist friends to do several practice sessions with them acting as guests (start with one at a time). When he is reliable, you can try this with actual guests. If you need more help with this, you can click on the prompt to initiate a consult.

This is a very common issue with puppies - they often get overly excited during play, and have trouble controlling themselves :) It's possible that your sister may tend to be louder, more active, or move more suddenly when she plays with the puppy, which often results in the puppy getting more "wound up." If your sister doesn't live with you, this may also be happening because the puppy is excited to see her when she comes over. Make sure that you have lots of different toys available for Sherri - long floppy rope or fleece toys for tugging, plush toys for biting and carrying, and smaller toys or balls for chasing and fetching. Your sister should always use a toy when she is playing with Sherri, so that Sherri has something to bite on. If she starts to get too excited, you can ask her to sit for a treat, or engage her in some other activity that is calmer and less exciting until she settles down. If needed, you can even give her something to chew on, such as a bully stick or a Kong stuffed with peanut butter, and put her in her crate for a while to let her calm down. Her ability to stay calm during play should improve as she gets older, just as it does for human children :) In the meantime, you can help her by redirecting her to a calmer activity when needed.

Thanks for using Petco Pet Education Center, formerly Petcoach! Welcome to having a young Australian Shepherd. This is very typical of the breed. The best advice I can give is exercise, training, and more exercise. When you walk in the door, ask Sofia to come to a certain spot, sit (or some other trick), and then reward her with a treat. If you do this every time, she will quickly learn to go to that spot every time you walk in (rather than jump and nip at you). And then take her out to run at least once daily- three times is even better. Best of luck to you and Sofia.