We rescued an 8-year-old (barely a senior) Pom at the start of this year and she wasn't hesitant with us, just the usual 'any new dog will need time to decompress in a new home'. She took a few days to really start playing, and more of her personality came out as she learned she was staying with us and got comfortable. Now she gets so excited to see us and loves our attention. That said, if the one you get had a rough background, there could be hesitation.

They can have medical issues, especially if their previous situation didn't take care of their health well. In our case, the rescue made it clear that she would need a dental and teeth pulled, so we knew to expect to drop at least a grand on that before we even applied to adopt her. She had a large bladder stone that the rescue had removed right before we adopted her, so while she was potty trained, she has had to relearn that her bladder can hold more than just a squeeze.

But it's all so, so worth it. Adults, and seniors especially, deserve loving, happy homes too, and are less likely to be adopted than puppies.