Fetch or Catch?

Very true. Kids and dogs are practically the same. They both need potty training, they both chew on everything, they're both noisy, they both smell bad, they both don't know their own names or other simple commands. All in all though, dogs are probably easier to take care of... because they don't let you put kids in cages...

I think the difference is the dog brings it back to you and the child throws it back.

Where I come from, fetch is a verb used often. For example, "Go fetch your brother and tell him it's time for supper".

The difference is in the verbs themselves. You can play catch with a dog just as you can with a child. However it is less likely to find a dog that is good at catch rather than fetch. With a child, on the other hand, the constant aim is to play catch, whether or not he can yet. It would be "mildly offensive" to say to a child "Lets go falling of bikes until you can ride".

Dogs are probably better at catch then kids are... Atleast some of the dogs I know

what are you talking about? I always used to go falling off my bike!

After some thought I've decided to stick this in the comments here instead of starting a new Rambling. I have come to the conclusion that it's vitally important for a couple to successfully raise dogs before they have kids. The number of dogs that they should raise simultaneously should be the exact same number as the amount of children they plan to have. I think that training dogs, especially more than 1, is very good preparation for the challenges of raising kids. The whole concept of punish-for-wrongs and reward-for-rights works really well on dogs, and if you've managed to raise a couple of well trained dogs that aren't mean to people but also not cowards, then you can consider yourself ready to have kids, because you've mastered the balance of punishing versus rewarding. This is just my opinion, I may be wrong. I must admit that I was a bit drunk when I came up with it. I'm surprised that I still remember it!