Kristy, the general consensus on this forum is don't house them together.
However, here in Aus it appears to be a common practice. Provided your tank/enclosure is big enough.
Things to consider:
In the wild they are solitary animals not pack animals. They only come together to mate.
Saying that you've housed bluetongues together and never had a problem, well that doesn't mean it won't ever hapen.
Bluetongues are aggresive towards predators and have a very powerful bite. If they fight, they can inflict terrible injuries or death. A territorial bluetongue may not see his tankmate as a friend, but as an enemy one day. For no reason that we can see, but usually it will be territorial. 'Stop being a basking rock hog' !! When we get angry with someone we yell, but when they get angry they get physical. They are wild animals afterall and doing what comes naturally to them, even if they were bred in a backyard.
Sometimes we see human emotions in our animals (yes! we all do it!), so just because they look like they're having fun together doesn't necessarily mean they are.
Most people like us who choose to have animal companions, we just want what's best for them. So if that means erring on the side of caution and not housing them together, it's better to be safe than sorry, insert another cliche here..... you get what I mean.
To answer your question, there is no definitve right or wrong. Some people do and have never had a problem. Some people have, and with disastrous results.
Babies do tend to be less aggresive than adults. But they do grow fast, your bluetongue will be close to full grown in a year (that takes longer in the wild because they eat less, brumate in winter etc)
Whether you do or don't that's your choice. It's a risk. Like alot of things in life I guess.
Being as this is an information site, it would be irresponsible for anyone (experienced) on here to suggest that housing them together
should be ok. We've seen the results, and whether it has only ever happened once, or whether it happens everytime two bluetongues are housed together is, I think, inconsequential. No-one can definatively say it won't.
The chances might be slim, but it's still a chance.
OK! End of lecture! I missed my calling in life and should've been a headmaster

Sorry 'bout that! It's a boring afternoon at the office!
Kristy, if you do plan on housing them together in an indoor tank, just don't tell anyone on here
