Hey, I have a jack Russell, My piggies live indoors in a cot, When I first brought them home I was terrified, I kept removing Bella (dog) from the living room if I wasn't sat in there with her, She showed them a lot of attention when they first arrived. The cage isn't very far of the ground so I really did panic.
Persistence is the key though, After a couple of weeks of Bella only being allowed near the cage when I was there, I started getting the pigs out, wrapping them in a fleece towel and then letting Bella sniff to her hearts content at the towel afterwards, This seemed to make her loose a bit of interest in the cage. Then I would let her sit next to me on the couch whist the pigs were running around (making sure I was calm but had hold of her the whole time), Now 6 months on, Bella sits on the floor with the pigs whilst there out, never unsupervised though, the pigs don't seem as jumpy around her, they popcorn over to her and steal veggies off her. I don't make her leave the room now if I go out of it. Its all about taking time with it, not rushing and expecting them to rather instantly get on or not, If you have a high energy dog (like me) I think its all about waiting it out, Once the dog gets used to the smells and the new noises they do loose interest. The pigs have to get used to the dogs smell as well, I used to put Bella's toys in the cage with them so they could get used to her smell too.
I'm not saying this will work for every dog, I do have a high energy dog who chases anything that moves when were out, But she has never chased something down and hurt it.
I really hope this helps, you know your dog better than anyone, read there body language.
Bella once seemed like she was completely fixed on the pigs when they were having floor time, I instantly removed her from the room, there will be plenty of times like this in the beginning. It will over time become easier as the smells and noises of the pigs wont be out of the normal and new.
Good luck.
A.x
