Yes.
All of them are the same, but to INCREASE strength they are several things you can do. When first making a neopet, you can make it really strong.Random events can increase strength.Certain foods can add strength.Majal_Kita the Jetsam is the strongest Neopet in Neopia at the moment. See the related links.
you adopt more
no it always changes
You cannot reset the clock, Neopet Time is the same in every country.
It stay's the same
Same level falls are falls that occur at the same walking or standing level. These types of falls typically happen on a flat surface without any changes in elevation.
Nothing they stay the same - their density changes.
Depends upon what color he changes to. He could have the same face, but just a different color.
find the two that look the same
The same thing any other neopet would, it just sits on your account really, until you interact with him/her.
Its the exact same car. The only thing that changes is the acura and honda emblem.
I'm sorry, but no. There's no way to change the name after it is created. If you adopted the neopet from the pound, recreate the same neopet if you choose and enter the name you wanted it to be. Though you can still keep the other neopet or abandon it so someone else may adopt it, but that's not nice, is it?? You have a limit for owning Neopets which is 4 neopets on every account you create.