From my own experience as far as danes and DA goes, males can be buttheads, but they are typically not as bad as the bitches. Males can snark at each other but will generally be back to being buds an hour later. Females can get along for years and then suddenly decide all other females (or just certain females, depends on the individual dog) should die.
Wow this sounds a lot like German Shepherds! I actually had no idea this was prevalent in Danes as well.
Velcro dogs...understatement, LOL. You will never shower, pee, or do anything alone ever again. It's endearing for a while, and then you start to realize it might just be a tad creepy that you've come to expect it. You will actually feel a little lost if that goofy face isn't staring at you every second of your life.
Activity wise, danes are as active as you are. Most people refer to them as couch potatoes, which irks me a bit. If you ask them to hike 20 miles a day with you, they would...because nothing makes a dane happier than being with their human(s). I've always had active danes, but that's because I am active and can't stand to sit still if the weather is nice out.
Do be cautious exercising puppies. Danes should never be forced to do any type of impact exercise until their growth plates have closed. Soft surface exercise at their own pace is fine, but don't go jogging with them, or a lot of walking on pavement, etc.
How much walking is too much? A lot of places we walk is pavement, so I'm a tad worried. I have heard of preventing excessive jumping and running.
I absolutely echo Green's sentiment on the "Gentle Giant" misnomer. Some of the scariest dogs I've ever been hands on with were danes...but some of the sweetest dogs I've ever been hands on with were danes as well. If you buy from a breeder, BUY SMART. Fearfulness and fear aggression are rampant in danes.
Wow, didn't know this.
Healthwise, they are a breed in trouble due to careless breeders . If you are considering going to a breeder, make sure to ask if bloat is prevalent in their lines. Ask them about cancers. Ask about hearts, hips, elbows, wobblers...at a minimum. Ask OTHER dane people about that breeder. The dane community talks, a lot, and there are a lot of danes out there that should be altered due to health or temperament issues that are being bred because of their success in the ring.
Thanks for these tips! I do have a breeder in mind if I go down the Dane route. It's a shame some people are so determined to win that they overlook health and temperament I wish it wasn't like that.