So later I read about OSS to avoid hormonal problems, but if the vaginal canal is stitched in the same way, I'm afraid of a dog hurting her badly, considering dog penises are usually longer than us and have a bone on it...
These are excellent reasons so do OSS. Sometimes it can be difficult to find a vet with the expertise, but the benefits are clear, and worth it! The more folks who ask about and for these, the more we as a profession will need to move away from routine full spay and neuter as a one size fits all approach for every animal, leading to better, more individualized medicine, and a healthier population!
With my current female, she is almost 3 years old, and I never seen her on heat, what I should do? I haven't been with her all the time when she was around 12 to 24 months, and my mom said she thinks she was in heat once because she saw blood on the floor, but never looked directly into her to confirm it (since she is long haired). I asked the vet when I get her vaccines, and he responded "I don't know, but we can spay her just in case...". Should I get another vet and ask for some blood tests?
I don’t think an elective surgery that permanently alters physiology should be done “just in case.” There are good reasons to spay, but this isn’t one of them.
How long has it been since your Mom noticed? I would start carefully monitoring, giving yourself about a year from that first date, to track her cycle. You can absolutely do progesterone measurements at the vet, but with many doggos only going into heat once or twice a year you may be frustratingly getting the exact same value each time until you’re closer to estrous.
Ultimately, if your vet is unwilling to work with you, or pushing you a certain way without going to the trouble of explaining reasoning or anything else, switch! I’ve worked with some vets who were pros at gas lighting a client to doing what they wanted, simply because it was the way they had always practiced medicine and they were unwilling to do things differently.
You also talked about external parasites control methods. I think the collar is the most effective one in her case, after testing external pippetes that didn't work, and chewables are way too expensive. My only concern, it's since it releases a lot of powder around her neck, specially when brand knew, if it's toxic both for her, and for me, since I inhale that while cuddling.
Flea collars can be manufactured at many different quality levels, and contain lots of different insecticides. Always check the active ingredients—they have different safety profiles—and get one that had a break way safety feature so your dog doesn’t choke herself.
Chemical wise, the two most common toxic ones that come up in conversation about flea collars are Tetrachlorvinphos and Propoxur.
Tetrachlorvinphos has extremely low toxicity to mammals and birds, but it has the misfortune of being an organophosphate, which makes people liken it to the more toxic ones. It's actually used as a feed through larvacide for a variety of species, including horses (who don't handle most organophosphates well). I wouldn’t expect any problems from collars containing it.
Propoxur is a carbamate insecticide. With the amounts that are in the collars, I also wouldn’t expect problems with normal use of the collars. If ingested, there might be a risk for toxicity (depending on dose). The most common way this happens is a young dog whose collar pops off, and who happily begins to chew it.
And last, about internal parasites, a friend told me that her doctor said to her that she should deparasite herself together with her dogs twice a year, since she slept with them. I think it was ivermectin (for her). Do you recomend that? I mean doing it together, and if it doesn't matter if they are different drugs (which one do you recomend for dogs, since I understand ivermectin is poisonous for some dogs like collies).
Ah, human doctors—trying to encroach on veterinary medicine by recommending getting rid of the dog because a child has pin worms (pin worms are species specific), and basically being some of the most frustrating and impossible clients to deal with of all time.
If you have your dog on good preventatives there absolutely isn’t nearly enough of a risk of getting internal parasites from sleeping with them to justify treating yourself.
At least in the US, great ways to get internal parasites from a dog include walking around barefoot in a dog park full of poop (hookworms), never getting rid of fleas on your dog and then eating a bunch of them (tapeworms) sitting in the sand with minimal clothing on a beach in the Caribbean being bitten by sand flies (Leishmania), or ingesting a developed egg that requires three to four weeks post being deposited in the feces to hatch (roundworms). Children do these things more often, so they represent a higher risk population.
The good thing about canine ivermectin is it has now been reformulated, and should be safe for dogs missing the ACB1 neural receptors in their brains to transport it out, like Collies (In school I learned “White Feet, don’t Treat!) It’s still a risk if you have large animals you medicate (where the ivermectin is apple flavored or something) and your collie licks it up from the ground, so keep an eye on that.
