[quote=@Sep]
Superman even has a super powered freaking dog.
[/quote]

Supergirl has a cat and a horse who sometimes turns into a man and romances her. 
[sub][color=slategray]I don't write this stuff.[/color][/sub]

But yes DC is far more fond of adding legacies than Marvel is. In recent years though DC has pulled back on them thankfully but they're still rather common. Batman is obviously the most notorious example and in my opinion the one that suffers from the least amount of updating. That said in the New 52 at least Dick and Co aren't quite as young. At least I don't think Dick was made into Robin at age 12 anymore (or at least I'm hoping not). I recall reading at one point that Batman went through his three Robins in about five years and if we say Dick is anywhere between 18 and 21 he would have been at least 13 to 16 when he first became Robin so how much of an improvement that is can be argued.