Lightwave do some 3 man specific tents which are also available with an XT version which would be light, would allow lots of room for the dogs and have a door either side of the extension.
Similar to the Hilleberg suggestions though, for your requirements they would be spot on but they will make your wallet weep.
Love mine. Build quality is superb and the performance has always been first class. Pre and post sales customer service was also excellent.
If you're going to use the tent loads it may be worth a Hilleberg/Lightwave style investment, if its just for occassional use or you fear possible damage from the dogs then obviously look elsewhere.
TFB