I have a springer spaniel, a patterjack, and a sausage dog (although he is not technically mine, but the dog of my bf and his ex wife, they both agreed Boris would be better off living with me so asked me to have him full time).
He is a long haired miniature sausage and nearly 5, and honestly is a really sweet natured, well behaved, extremely affectionate dog.
I did laugh at the earlier comment about them not liking to go outside to poo if it is raining, wanting your dinner and your bed , because that is so true. He will try and avoid getting his paws wet, but I just shuffle him outside with the others when they do their business. There have been very few times he has done it inside, and that has been early on when he was not sure where he was meant to go as it was a new environment.
He definitely thought he was human when I first met him, but I think that was really down to how he had been looked after by my bf and his ex w , as they used to give him the same food they had, like lasagne, scrambled eggs, chicken breast etc. Now he eats the same kibble my dogs do without a second thought, though it has taken a while of weaning him onto it, and he is now the right weight for his breed (he was a bit too heavy), though he will try and beg for anything we eat, but I think that is typical of all dogs.
He is quite territorial of the house and the car, in so much as if anyone knocks or walks by the car, he will start yapping, but if I pick him up so he can check them over to give his approval, he is then fine.
He is a bit snooty with people and dogs if he doesnt know them though, but once he does he is just one of the gang. The first time I met him, he was in my bf's van, and he barked as I walked up to it, then as I got in he walked over the seats to my bf, sat on his lap and turned his back on me like I was not worthy lol. Ten minutes later he was rolling on his back letting me scratch his tummy and now he is like my shadow.
I think sausage dogs have a tendency to bond v closely to a few people and everyone else is just allowed to be in their breathing space. He worships myself, my bf, his ex wife and her bf, he is very happy to play with my kids and v good and sweet with them, but not to the same extent, and everyone else is irrelevent :) . And he was a bit of a snoot when he was introduced to the other dogs but they are all firm friends now, which is lovely to see.
You do have to be careful wrt their backs, they shouldnt really run up and down stairs or on and off beds/ sofas etc, and you have to be very strict with their diet, as even a small amount of being overweight can cause issues (I live in a bungalow though, and have quite a low bed). He can switch between being a complete couch potato, snoozing for ages, and dashing about like a mad thing, running about with the other dogs, and considering how little his legs are he can keep up surprisingly well!
Given any opportunity he will sneak into bed with me, he likes to bury himself right under the duvet and curl up against my stomach, but he is getting better at sleeping on the floor over time. He was definitely a pampered prince, but a well behaved one, so all I am doing is trying to break the bad habits he was allowed to have in the past a bit at a time.
I really do not think he is any more hard work than any other dog tbh, well not compared to my other two. They all have their funny little traits, my springer is obsessed with balls, lives breathes and dreams them, will even go to sleep with one in her mouth or under her paw. My patterjack is the same about chasing lights, if the sun reflects off my watch onto a wall for example, he will keep running at the wall trying to bite it, and he has a thing about watching the telly until he sees a dog or a horse, then he will growl and bark, then act like he is telling himself off and leave the room grumbling, lol.
Boris' thing is always having to be in touching distance of me, to the point that if i lie on the sofa or the bed, he will climb onto my stomach and sit there just looking at me, until either I get up and move, or he falls asleep.
He does not do well being left alone for long though, but I am not sure if that is how he is, or if it is a trait of the breed. That was the deciding factor as to why I am now looking after him full time, as I am at home, and if i do go out and am not able to take him along, I am never usually gone for more than an hour. When I do have to leave him at home, he still has the company of the other dogs too, so he does not get anxious and howl like he used to (my bf's exw had to leave him from 6.30 am - 3pm monday to friday to work and he hated it ).
Sorry for the massive post, I am sure most of it is just rambling and irrelevent, but hopefully it gives some insight about life with a sausage dog.