ummm definately way too small for danes then. My danes are smaller at around 100 lbs because they are both under a year old and even at that one of their legs alone is over 2 feet. Their heads are about a foot. So I definately would not recommend this for a Great Dane.
And that is absolutely my apology. Im not the biggest dog enthusiast, if you can read by my prior reply. CORRECTION : Perfect for most dogs. Sorry again.