My cat peed on the bed after a stress collar. Is it a bad reaction?

This isn't a behavioural problem, it's probably a bladder inflammation which cats get due to stress, which he obviously had because of the dog. You will need to take him to the vet in rder to get some medications to reduce the bladder inflammation, he will also need to be on a special diet for about a month to help reducing the bladder inflammation.

SI am sorry to hear about your concern for Sadie. Some cats are very sensitive to change and it can cause anxiety which then leads to inappropriate urination. This is possibly what is happening with Sadie. You can try a calming pheremone product called Feliway, either sprayed on the bed or in a diffuser https://www.feliway.com/us and a calming supplement like Zylkene or Composure (available online) to see if this helps her.

These types of behaviors can be very frustrating and can be difficult to resolve. The easiest thing to do is to add an additional litter box in that area to see if this helps. A good rule for cats is one litter box per cat plus an additional one. Another option would be trying feliway which is available as a spray or a diffuser to see if this helps with some stress your pet may be experiencing when you leave. Other types of medications for behavior modification would be prescription based so I would recommend reaching out to your family veterinarian regarding those options if necessary. I hope this helps and thank you for using Petco Pet Education Center, formerly Petcoach!

Thank you for using Petco Pet Education Center, formerly Petcoach! The sparkles you are seein may be crystals, which are formed in the bladder and can be very irritating. I would recommend making sure this is not the case in the litter box as well (you can take a some Saran Wrap and line the bottom of the box under the litter). Inappropriate urination in cats during times of stress is fairly common, and can be compounded by a condition known as feline idiopathic cystitis, which is essentially inflammation of the bladder wall due to an unknown cause. I recommend bringing Sahale to her vet for a urinalysis to make sure that these crystals are not persistent. If crystals are present, they can be managed with a dietary change that can be prescribed by your vet. You can also try Feliway products during times of anticipated stress to keep her calm. I hope this helps and am happy to answer any other questions you have!

I agree with you. I think this is stress related behavior. Feliway is great - make sure you have enough plug-ins to cover the square footage of your house. Also, they make a Feliway collar for cats that looks like a flea collar - you may want to get that as well to put on him. As for the gabapentin. That would not have been my first choice of drug for this issue. I have had better luck with fluoxetine, buspar or amitriptyline. You need to talk to your vet about switching drugs. Five days is not a long time but I don't personally feel like that is the best drug for this issue. Of course drugs are an individual response. What works for one may not work for another so sometimes you need to go through a couple different drugs or drugs dosages to find the right fit. https://www.veterinarypartner.com/Content.plx?P=A&S=0&C=0&A=633 Be sure you have enriched his environment appropriately to make him feel less stressed. http://www.catbehaviorassociates.com/what-is-environmental-enrichment-and-why-does-your-cat-need-it/ Hope this helps. Be patient. I know it's hard but I think you can work through this. Best wishes!

Urinating and defecation out of the litter box are commonly cause by feline stress. True, sometimes it can be cause by too little social interaction, but it could also be cause by myriad other things. You may consider supplements like Feliway ( http://m.pet-supplies.drsfostersmith.com/search?w=feliway%20for%20cats ) or Hill’s c/d stress ( http://m.pet-supplies.drsfostersmith.com/search?w=C%2Fd+stress ). Here is a great article to look over: http://www.veterinarypartner.com/Content.plx?P=A&S=0&C=0&A=633

It is hard to say. It is likely that this is behavior caused by the stress of the new cat coming over. Make sure you clean the comforter well with the odor remover. Enzymatic cleaners, like Nature's Miracle are best. Also consider looking into a product called Feliway that may help calm Shadow and prevent this behavior from continuing.