I've had several, and imo they make amazing family pets. Like any dog, they have their pros and cons. They are the happiest dog I've ever had.
Few health issues but make sure your breeder has them checked for CECS which is inherited
They are terriers through and through so like to dig and chase. They are escape artists too so a secure garden is a must.
They love humans and will happily sit on a sofa all day being loved. Equally they will walk up mountains all day, or run marathons with their owners.
Stoic, hardy little creatures, that don't need pampering, no need for jackets, but will need hand stripping a few times a year. Don't need bathing, actually it's bad for their coats. They do moult a little, but if kept hand stripped not much.
They are intelligent so easy to train, but can be really stubborn if they feel slighted. Very food oriented (great for training) so we have to weight ours food, otherwise she'll put too much weight on. Recall isn't a given no matter how much you train them, if ours gets a smell she's off, once lost her down a fox hole which was awful as I've know BT's get stuck in holes. We now keep ours on a lead. They can also be reactive towards other dogs, but you can train this out of them.
Huge personality in a small brown dog. A proper dog imo.
I always recommend them for family pets as they are great with kids.