
You will get different opinions from different breeders, depending on which breeds they keep as well as Chi's.
Mine are brought up with a Border Collie and 2 Bearded Collies, and I allow Chi pups to scramble in the compost heap like any other dog I've owned.
However, they are born with open fontanel, and a blow to the head can be fatal. Common sense tells you that you don't allow them to jump off the settee! It's nothing to do with namby pambying them, you have to realise how much more fragile their bones are.
However, once they are older, and have gained confidence, and are sure footed, it's a different story. I have my heart in my mouth when my stud boy does the wall of death round the living room, leaping from the back of one settee to another, but he has no qualms at all.
They are trainable. While I don't expect the same intelligence as the pastoral breeds, when I call them in, they know I mean it! They're not interested in retrieves, but you can get a good level of obedience if started young. Recall is good.
I do agree with you about their spirit and strength of character. They really have no idea that they are small. I have a youngster that happily trots up to a very large Rottie at ringcraft, to greet him. Oh, yes, and he's in love with a St Bernard bitch that he met there. There is nothing worse than a Chi that gets all snappy, and yappy because it's frightened of larger breeds.
My stud boy, when he went for his booster jab, went up to a large Rottie in surgery - just to warn him off as I had a bitch in season at home! He stood next to him (Rottie was lying down), and stood as tall as he could get, while scraping his back legs in a manly display!! I have to laugh!
You couldn't get away with feeding once a day, they do need little and often. I've never seen hypoglycemia, but understand that it can be a problem. Although there aren't any compulsory health checks, I always think that eye, heart and patella history is a good idea.