Why is my cat hissing at her cone-wearing sibling after the vet?

This can happen after a stay at the veterinary clinic. It should pass in a few days as Stella loses the scent of the clinic. You can try a pheromone product, such as Feliway spray or plug in diffuser, to decrease any anxiety.

It’s not unusual for cats to be “upset” for a few days when one comes home from the veterinarian. Give it some time and likely things will go back to normal. If he is wearing a cone they might not accept him until the cone is gone. Best of luck and thank you for using Pet Coach.

There does seem to be an unusual phenomenon that when one animal attends the vet for a time its companion can react badly on its return. Possibly due to unfamiliar smells. Usually it settles after a week or so. If not you could try bathing the cat or invest in a pheromone diffuser to try and settle them.

Cats exhibit this behavior sometimes when one leaves the house. Most of the time it’s more growling and hissing and running then anything else. Most cats will get over this quickly. Supervise them so that they don’t hurt each other and make sure one does not bully the other. If you have something they really like it such as canned cat food, you could try feeding both cats the food or treats close to each other and talking sweetly and petting both. I hope this helps and best of luck!

Thank you for submitting your question regarding your cats. I suspect that Stella is stressed by the return of her housemate. Callie likely smells and acts a bit different after being gone for so long. I would keep them separate to allow them time to readjust to each other. They should get along fine, but it will take some time. I hope this information helps!

Cats will often do this if they have been separated for a period of time, especially if one cat looks or smells different - your female cat may have strange smells on her from her time outside. Most of the time, this reaction is mild and the cats will get along again after a day or two. If there is any serious fighting or if his aggressive behavior towards her does not seem to be improving, then you may need to separate them and gradually reintroduce them to each other - feel free to ask for additional help on this if needed :)

Thank you for submitting your question regarding your cats. This can be common after a trip to the veterinarian. The kitten will be covered in different smells. This can cause stress in the older cat resulting in her to act out in aggression. Keep them separate unless they are fully supervised. They should be fine with each other in a few days. In the meantime, you can try a pheromone diffuser to help calm them. Feliway is a good brand. I hope this information helps!