Why is my senior Chihuahua barking constantly after her friend died?
I'm sorry to hear that Seraph lost her friend last year. It's certainly possible that she's experiencing some loneliness, but I would have expected the behavior changes to start right after your other dog's passing. Given her age, the other thing to bear in mind is that she may be starting to develop some cognitive dysfunction, vision loss, or hearing loss. Any of these changes can manifest with some degree of separation anxiety and barking changes. If you're planning to get another dog, I doubt that it will make matters worse for Seraph, but there's certainly no guarantee that it will help her barking and anxiety either.
These articles have a lot more information for you to consider:
https://www.petcoach.co/article/4-signs-of-cognitive-dysfunction-in-dogs/
https://www.petcoach.co/article/aging-gracefully-6-things-to-know-about-canine-cognitive-dysfunct/
https://www.petcoach.co/article/is-my-dog-experiencing-hearing-loss/
https://www.petcoach.co/dog/condition/acquired-deafness-and-hearing-loss/
I hope this helps a bit and that everything goes well for Seraph!
Updated on September 23rd, 2025