New dog made my cat depressed. How do I help her feel better?

As long as your cat has a place to get away from the dog that the dog can't harass her she should be fine. So put a baby gate up in a room where she can go to be alone - eat, use the litter box, etc - away from the dog. Then get the dog some professional training to help curb the behavior. It is not good to allow an unruly dog to chase cats. Chows are notorious for killing cats.

I am sorry to hear about your problems with Marilyn. If she is still eating/drinking normally without any vomit/diarrhea/cough/lethargy/weakness then you could try a few different products to help ease any anxiety. There is a pheremone product called Adaptil that is available as a collar or a diffuser plug-in that can be calming to many dogs. You can get this at a vet's office, online, or in some pet stores. I would consider a calming supplement such as Zylkene or Composure (also available at vet's offices or online). I would be sure that Marilyn is still getting attention from the family and that she is able to get away from/escape form the other dog if she doesn't want attention from him. Provide her a safe sleeping area and separate food and water so she doesn't feel any need for competition between the two dogs. If the problem continues or she develops any of the symptoms I mentioned earlier (these could indicate illness) , she should see her regular vet.

There are calming supplements and diets which can be very helpful, as well as pheromone and comfort zone diffusers which can help cats adapt to such situations. A full health check and possibly blood panel should be considered to rule out medical causes especially if there is any weight loss or altered thirst

Dogs have anxiety and stress just like we do. Give her time, lots of attention, and she should adjust just fine. In severe cases of anxiety I use anti-anxiety medications off-label like Lorazepam that you can get from your veterinarian.

I would recommend having Lilly see a veterinarian. I would want to make sure it isn't medically related and more related to having the other cats gone. If they don't see anything medically going on I would recommend making sure you are spending extra quality time with her doing things she loves and then discussing medication with your vet. Thank you for using Petco Pet Education Center, formerly Petcoach.

I would recommend giving Maddy a very slow introduction to the new dog. You should be sure to spend time alone with Maddy at least once a day, and she should have a little time each day to have the house to herself as well. I would recommend keeping them mostly separate for a few days to weeks: they can sniff each other through a closed door at first then have short periods of time together supervised. If someone gets upset, they should be separated again. You may be surprised - Maddy might get along great right off the bat with the new dog but don't be discouraged if it takes awhile. You also might want to consider purchasing a pheromone spray like Feliway to help decrease her stress.

Hi there Adjusting to a new animal in the home can sometimes take months. There are a few things that can help, but honestly time is the best remedy. I would make sure all the pets have enough space, and a safe place to eat and drink that is away from the new cat. I would also use the Adaptil spray and Feliway spray diffusers in your home. This helps animals calm down and can make their enviornment more neutral while they adjust. Finally, just be sure to keep things routine. Pets love routine and while a new cat isn't routine, keeping everything else this way will help. Best wishes and thanks for using Pet Coach!