We have an inside cat, and we've been trying to find ways that we can take our cat outside, because all cats should be able to go outside now and then.
We bought a harness (I think it's an H harness) and he ran around the house with it on for quite a while. He was a bit irritated, but got used to it.
We then allowed him to go outside on it, after we knew he was okay with the harness.
This is where the trouble began. When he pulled away from us on the harness he would pass out!! This scared us practically to death, so we took him back inside and put his normal collar on him.
We really want him to be able to go outside. Is there anything else we could do other than build a cage?