My female dog won't accept our new male puppy. What can I do?

Not all dogs will like another dog. It is kind of like getting a random college roommate. Sometimes you are best friends for life and sometimes you can't wait to move out! I would recommend that you give them time to get to know each other. Continue to monitor them for signs of aggression or fighting. If your male just seems ambivalent to Lulu, that is ok. They may not want to play or snuggle together, but hopefully they can live peacefully in the same house.

It can be very stressful for the existing dog when a puppy is introduced. I am not sure what you have tried already but if it is not working then you could try an Adaptil collar, Solliquin chew, or talk to your vet about trying an anti-anxiety medication, like Trazodone to see if that helps relieve any anxiety your adult dog may have. Otherwise, you may need to get a professional trainer to come and work with your dogs. Here is a link with information on how to introduce a new puppy... https://indoorpet.osu.edu/dogs/new_additions_dogs/dog-dog-intro

It may take some time for her to accept him. If she is being aggressive toward him than you should not allow them to be together unsupervised, espeically around feeding time or any toys/bones that she may protect. Give her extra attention, praise, and treats while the puppy is around so she knows he is not there to replace her. You could also try an Adaptil collar or diffuser and see if that helps. If she doesn't start accepting him than you could talk to your vet about trying an anti-anxiety medication, like Prozac or Trazodone and see if that helps.

I'm sorry to hear that things aren't going well with your new dog. Unfortunately, it sounds like this may not be a good match - just like humans, some dogs have very different personalities and may simply not get along. If you want to try keeping both dogs, I would really recommend getting in touch with a veterinary behaviorist who can evaluate the dogs in person to give you a better idea of whether this is a fixable issue - if so, he/she can help you put together a detailed step-by-step plan to work on the problem. You can search for a behaviorist in your area here: www.dacvb.org In the meantime, I would recommend keeping your older dog on a leash or physically separated from the other dog with a baby gate or other barrier. This will allow the younger dog to relax a bit without being harassed. If things go well like this for a few days, you can gradually allow short periods of contact between them. Reward both dogs when they are together, and particularly praise and reward your older dog for calm behavior around the new dog. You may also want to try a DAP pheromone collar on both dogs, along with a natural calming supplement such as Zylkene or Composure for your older dog to see if this helps a bit.

I'm sorry to hear that you're having this issues! It sounds like there are a few different things going on here with both dogs, which definitely makes the situation more complicated. From your description, I can't quite tell if your male dog's crate aggression issues are directed at the puppy only, or if this is more of a general problem and he also snarls and runs from the puppy at other times as well. This is important information to help determine what may be going on so that we can make suggestions. I'm not sure how old your new puppy is, but if she is younger than six months, aggression at this age is quite uncommon and very concerning. Possessive aggression (also called resource guarding) over owners is a relatively common problem that can often be successfully treated, but you would really need an expert who can help you in person. Particularly in a young puppy, a veterinary behaviorist would be your best bet to evaluate the pup and put together a detailed plan to start working on this problem ASAP. If you want to keep both dogs, this will definitely require some professional assistance and quite a bit of time and effort for training. I would recommend asking your veterinarian to refer you to a board-certified veterinary behaviorist for some hands-on guidance.

if Prince is not neutered, this may be the reason behind the behavior. Neutering Prince will help but the behavior will not change over night. Here is a link about introducing dogs: https://www.petcoach.co/article/5-tips-to-introduce-a-puppy-or-dog-to-your-older-dog/ Make sure to monitor all interactions to prevent injury. Keeping Prince on a leash will help you to provide better control. Making sure both pets are well exercised prior to the meeting can help as well. Do not leave the pets together unsupervised. Best of luck.

If your dog does not get along with other dogs it was probably a very bad idea (and a very stressful one) to bring a new puppy into the house. A new puppy can also be hard around a newborn as they aren't yet sure how to interact with each other. You can try to continue to get the two to get along by starting with limited introductions that are supervised, however if a fight breaks out the interaction should be stopped immediately and started again later. Never leave the two unsupervised together as even a good play sessions can cause accidental injury. You can also use baby gates as a way for the two to "meet" each other without being able to physically be together. If fights are continually breaking out, talking to a trainer or behaviorist that can observe within the home is best.