Is it rude not to acknowledge dog?

I wish more people would do as you do. It took me ages to train my puppy that you only get attention when all 4 paws are firmly on the ground (mine sits). Took ages because even though I asked people to ignore her until she sat nobody did ( she's a beautiful, and so so soft )
Ignore the bad, reward the good in this instance.

No it’s not rude.

Correction. It appears she is scared of the dog.

Maybe you would feel more confident around ddog if you made some effort

OP didn't say she was scared of the dog. She's not interested in it and doesn't want to encourage it jumping up at her.

The dog sounds out of control and badly trained. A big, powerful dog who jumps at people is an accident waiting to happen.

A dog doesn't have to bite to be considered a danger - if it knocks someone over and they're either injured or frightened of being injured, the owners can technically be prosecuted for having a dangerous dog. Lots of owners are (scarily) unaware of their responsibilities in that respect.

I work with dogs (and own a dog) so I'm used to being jumped at and to dealing with excitable dogs, but if someone isn't happy with being jumped at, it's 100% the owners' responsibility to deal with that and to get their dog under control.

YADNBU!
It is your family and their badly trained dog who are the rude ones.
You are doing exactly the right thing ignoring it and then giving it a pet when it is behaving and calm.

Just don’t go over. Unless they control the dog or shut it away.

Just say something reasonable, like:

"I'm not being rude. I'm worried if I start to give him attention, he will get excited when he sees me and launch himself at me, as he has before."

Of course, reasonable doesn't always work with people who think their dog is their baby or plays in their netball team, or any such shit, but you can't reason with stupid.

I just say to the dog 'go away, I am not a dog person'. Friends understand and even laugh. Not everyone is an animal lover.

I have to ignore my sisters dog when he first see me because he get so excited😂.

so we have the opposite problem - her saying ignore him ignore him and me trying to comply and not break down and give him belly rubs while baby talking!

your MIL is a loon. As much as I love dogs, it isn’t an elderly relative that has to be given respect!

If they won’t stop it jumping up then I would refuse to spend any time with it. Turning away and ignoring it was the right thing to do. But screaming isn’t.

I think this is a bit OTT if you already know its friendly. Turn away that's fine but you need to remain calm. It's true you don't want the DC to get a fear of dogs. If it's truly dangerous don't go there but if it's just over excited acting calm is much better all round.

I agree the family need to stop it from behaving badly and you should tell them so.

I’ve always been taught to ignore a dog if it’s hyper like that and then when it calms down to then let it sniff you or give it a quick pat.

I love dogs so would never ignore one the entire time but I would not be happy with a dog jumping all over me and I wouldn’t allow my dog to do it to someone else.

I'm a Dog person and spend a lot of time with Dogs as my Dog is on a sports team (so I know a lot about Dogs). You are doing absolutely the right thing!!! My Dog is terribly excitable and awful with visitors so I've worked really hard on his training with this and tell people to do exactly what you are doing. Ignoring them is the key!!! By doing this, you're establishing your alpha position and they can see that you don't want the fuss so they will stop it. The only time my Dog is calm with visitors is when they don't take any notice of him until he is calm. It's absolutely not rude, It's rude of the Dog's owners to allow them to jump up at you if anything.

No, of course it's not rude to not acknowledge a dog. It may be slightly weird to completely ignore a cute placid friendly dog, but I would happily ignore a barky, aggressive, 'trying to jump all over you' type dog, that clearly has shit owners. (Well, I would TRY to!)

The problem is, 20-25+ years ago and earlier, any dogs that my family and neighbours and friends had, (including my parents, uncles and aunts) just used to come up to you, give your hand a lick, and let you pat their head for two seconds, and then they would go and sit on the couch or go in the garden.

NOW, you've got dogs who are absolute maniacs, who run up to you. pull you over, bounce all over you, and bark like crazy, as soon as you enter the room, or as soon as they see you if you're outside. A lot of dogs are more aggressive and bouncy and worse behaved than they were a quarter century or more ago. (NADALT.) NOT ALL DOGS ARE LIKE THAT.

DH's brother (who actually lives miles away now thankfully,) used to have a spaniel in the late noughties, and I refused to let our daughter into their house until they'd put him in the backyard or kitchen. He wasn't super aggressive, but he was very, very energetic and bouncy and jumped all over our daughter, knocking her flying, and scratching her and pulling at her hair. Did it to me several times too.

His brother thought it was hilarious, so I told them the dog goes OUT or we leave. So SIL (who was very placid) just pointed at the back door and told DH's brother to put the dog in there. Thing is, if he DID stay in with us, he didn't settle down. Half hour after getting there, he was still bouncing all over you, and scratching and barking. The problem is not the dogs though actually ... It's the shitty owners. DH's brother included. Dog had zero training.

I think you’re fine.
I am not a dog person, I don’t think I have ever acknowledged one. My brother has one that jumps up if it does it to me, I lift its paws off my chest (it’s a huge thing and I’m only short - so that sounds worse than it is) and move him to the side.

I am a dog person. I will generally make a big fuss of any dogs I meet. However, in the situation you have described, I would completely ignore him u till he stops jumping. Your sil needs to train her dog. It is completely unacceptable to allow him to jump on people.

As pp's have said, your approach is the correct one. The suggestion to tell your mil that you are waiting for him to calm down is a good one.

Best way to deal with unwanted jumping up behaviour is to ignore it and not give it the attention it is seeking so 100% you’re doing the right thing to ignore it!

giving attention when it is doing a behaviour you want (I.e. being calm, paws on the floor etc) is how you reinforce you see as good behaviour. But it is t your job to train. The dog so if you don’t want to engage with the dog at all, that is perfectly fine.

I am a lover of dogs - especially big dogs and have my own but Iam fully supportive of people that dont want to engage with dogs and disagree with those that force their dogs on others/ minimise their dogs poor behaviour.

I'd ignore a dog that jumped on me just because they should be trained not to do that.

I generally dislike dogs, I'm not scared of them but they're annoying and smell and just gross me out esp if they're long haired or scraggy.

Anyway... I tell my friends dogs to get lost (and other terms) when they come near me as they jump up and try and steal your food. She doesn't care in fact she laughs about it and does impressions of me telling the dog to "fuck off" she knows her dogs are annoying.

Anyway long and short of it is I think it's fine. I'm not offended when someone pushes my cat away.

I’ll bet that she got it during lockdown, and it’s her first dog?

No, it's rude not to teach your large dog not to jump up on people. I have big dogs and it's a really important lesson for them - paws on the ground and wait to be acknowledged. If they're not acknowledged, that's fine. If they are and they get a fuss then they get all wiggly and waggy and silly. It's so important that all dogs are taught to behave as if every person they meet is scared of dogs, but especially big dogs.

My dogs are my babies but that doesn't mean they can't be well trained and disciplined!

I can relate. I have a family member with a big bouncy lab which is most def her 'baby'. And it's cruel to train dogs, according to her, so while its not aggressive at all it does spend the whole time jumping and barking at you, if you sit down it starts leaping onto your lap, will snatch food out of your hand, etc. I totally ignore it because I don't want to deal with it, and she will be all "He's just wanting attention! He's so friendly!" I'm sure she thinks I'm some dog-hating weirdo, but hers is just not enjoyable to be around.