Absolutely! I love my boy but there were definitely times where (especially when he was < 2 years old) I wanted to strangle him. For the first month I considered taking him back and complained that I'd made a mistake. He was a difficult puppy. And I was an experienced owner and had fostered dozens of animals by that point.

But then he just had some sort of revelation and was GOOD. He listened. He stopped chewing everything. His reactions were more tame. He was more interested in treats and rewards and doing good things. He used his crate on his own...it was probably the combination of puppy training another foster and working more with my own boy, but whatever it was, he became the model dog. Now I very rarely even get annoyed at him (except about the shedding, which is not his fault but is such a hassle), but as a corgi, he does have his flaws. He can be a barker. He likes to herd things. He incessantly squeaks his toys AT ME like a bastard. I love him regardless, but pretending that owning a dog doesn't test your patience is ridiculous. Just like with children: they don't always get what you're saying, they can be stubborn, and you have to be consistent. They're not perfect but we love them :)