[PiggieMom]

I'd still put a secure lid on the cage. You never know what might happen. I've seen at least two stories of dogs chewing through doors to get to guinea pigs (when they've shown no interest in them before). I'd also reinforce the entire cage with zip ties even if you do use connectors so it is more difficult for it to break apart. You can use zip ties to build the entire cage, I've never had any difficulty doing this. I prefer to use connectors just because I like the look of it and it adds just a wee bit more room.