I can relate.
3/5 of my bettas started tail biting. First Gray (my marble super delta) started just nipping at his fins. So I bought a 10gallon and divided it for him and Gajeel (my DSHM) to share (hoping the extra space would cure the tail biting). Gray then goes and tears a strip from his butt to the tip of his tail, making him look like a double tail, and refuses to leave his fins alone. I made the boys trade sides to see if a change of scenery would help, and then Gajeel starts tail biting! I had to move Gajeel into a 2 gallon bowl.
Then I look at the 3 gallon beside them and see that Natsu, my orange VT, is nibbling at what he had left of his tail (He was missing some of his tail when I bought him). I knew he was happy in the 1.5gallon I originally had him in, so I moved him back into there to see if that would help, and it seems to.
Meanwhile my cat, Cisqua, decides she's bored in this small apartment (not that I blame her) and decides the best game to play is terrorize the new CT I bought by batting at his tank when he gets close. When she's not doing that, she's knocking all the collectables on the shelves off onto the ground when I'm trying to sleep. She has tons of toys scattered around the apartment and a big, homemade cat tree, but she's young and obviously restless...
My dog, Harley Quinn, who is coming up on 4 years, has suddenly developed a chicken intolerance. So if she eats dog food that is chicken based, she will have completely liquid diarrhea. So I had to figure out a dog food that did not have chicken, or grains (I feed her grain free so she doesn't shed like crazy), and yet still appeal to her picky taste. And it had to be a food that my work place could order in since we are the only pet store within 2hrs driving distance.
Plus with this dry weather, she's constantly reverse sneezing. She often will come to my side of the bed in the middle of the night and start reverse sneezing in my face. That and she keeps hacking like there's something caught in her throat. The vet says she's fine, and that it's likely the dry air that's causing it all. We bought the biggest humidifier we could afford, but it runs out of water so quickly...
My other dog, Bruce Wayne, had to stay on the farm with my parents since my apartment contract only allows 2 pets under 30lbs (Bruce is 75lbs). My parents don't really like having a large dog in the house, so they built him a dog run with a heated dog house... But he has really short hair and I worry about him constantly. My husband and I really want to have him with us, but we cannot afford a house right now, and our landlords won't let us take him in.
I have a special needs leopard gecko, and I'm finding now that I don't have quite as much time as I would like to take care of her, but I'm so protective over her that I don't want to just give/sell her to a random stranger, I'm worried they wouldn't take care of her.
I also have sick fish at work as well and don't know what to do for them. I have 5 fish already and my husband is about to lose his mind if I would bring home another, especially since my divided 10 gallon didn't pan out.
I'm definitely pulling my hair out over all my pets lol
I'm very sorry to hear about your loss with your horses. I use to own horses as well, and they are such amazing animals. I had a colic scare with my one mare and I was in tears since I was so freaked out.
I really hope you find something to help your bettas. I wish there was something I could do that would cure tail biting for good. :/
Is there anything you can use in the store to treat the poor guy in the store? Where I work, we sometimes write off some products and use them for the animals we have in the store when they get sick. Head office doesn't understand why we do it, but we refuse to let the animals in our store just die off because we don't want to spend the time treating them, so head office usually doesn't say anything as long as we don't go spending a ton of money.