Thanks for asking! Getting misgendered is different for everyone and heavily influenced by factors like age, weight, how far into transition someone is, how much they pass, etc. I've been trans for a long time I'm in a pretty comfortable place, but I still get misgendered on occasion.

How "bad" it is mainly depends on whether there is malice behind the misgendering. An honest mistake is excusable (until it becomes a pattern), an asshole is not. In fact, I unintentionally get misgendered the most by allies (ironically) but it's never out of malice. I'd say overall it's similar to your example of misnaming someone, especially since the two often go hand in hand. If it happens once or twice it's not an issue, but if someone purposefully calls you by a different name (presumably one of the opposite gender) then there's a problem. In some states your name and gender are protected, in other states it's legally mandated to be a complete and utter asshole.

Regarding my original comment, it's mainly frustration at the hypocrisy some people have who make every excuse to avoid using someone's preferred name or pronouns, but then have no problem switching when it's someone else's pet.

There's also this meme:

While I have you here: this is tough to hear but please believe us when we say the US is trying to genocide us. The Lemkin Institute for Genocide Prevention has already issued its third warning , but getting people to pay attention has been a huge struggle for us. We're literally just regular people trying to live regular lives.

It's not as simple as that, at least for humans.

Firstly, you're not generally going around looking at people's genitals, and even if you were you wouldn't be able to tell if someone's had surgery. A lot of trans folk pass well enough that you wouldn't be able to tell we were trans unless we told you, at which point you look crazy insisting that a guy with a full beard and pecs is a woman.

Secondly, while sex and gender are separate, the distinction is often brought up without nuance. Sex is not a simple concept, and it's impossible to define generally in a way that doesn't misrepresent some class of cis folk. A trans woman has neither the hormonal levels, body fat distribution, strength, brain mapping, medical risks, nor (necessarily) sexual function of a cis man. Defining it fully by some metric such as chromosomes or the ability to reproduce erases all sorts of human experiences, like intersexuality or menopause.

We assign pets genders because of our human experience, but they almost certainly lack the concept. A dog doesn't care what you call it. Hell, a dog rarely cares what it's fucking.

it’s probably misgendering to assume its gender at all and that the concept of gender applies to dogs

Is that true, though? How would we know? Just by Occam's razor, I would find it safer assume it applies to all mammals, ie. why would humans specifically be different, or if there is a spectrum across species, where/how would we draw the line?

I would have guessed (older) blokes who would take someone assuming their male dogs is female as a slight.

if you own a female dog you can tell the difference between the pee and poop by the arch of the back. A male dog doing a puppy pee also looks different. Its possible female dog owners can tell easier.

I have a 110lbs beast of a mutt. Cujo like even, except he doesn't try to kill me. He squats like a female dog and it makes him much less scary.

I don't really get your comment. the dog and generally owner usually around me do not care if you call a girl dog a boy or a boy dog a girl. that is all I meant. it had nothing to do with accuracy on the don't care part.

I kinda would like to see that.

Generally speaking, male dogs tend to lift a leg to pee while the females tend to squat. It's nowhere near foolproof, of course, but you can usually say for sure that a dog is male if it's lifting a leg. That said, I know plenty of male dogs that squat, or do the "lazy lift" where you can't quite tell. So y'know...

if you own a female dog you can tell the difference between the pee and poop by the arch of the back. A male dog doing a puppy pee also looks different. Its possible female dog owners can tell easier.