Something to note: I don't like tents and sleep on the ground as much as possible -> tents are for weather....
That being said the tent is a great choice for backpacking use. Light, sets up easy, sheds wind well, etc. The tent is bright inside even in weather. Personally I don't like bright color tents and would rather have earth tones. Mountain Hardwear Skyledge 2 DP is virtually the same tent in green.
Here is a pic inside the UL2 for relative size.
Two 6' guys - 150 to 165# - feet still have clearance on the end plus some head room. As stated above all gear is outside except for clothes and bags. No problems with elbowing or kicking each other in the night.
The tent would work fine for a man, dog and all your gear.
(We must be really bored waiting for the rain to stop if my buddy is taking selfies.....)