Hi, welcome to TT!
I suggest you click the link that says 'Read' because is is the rules. Yes, it will keep your tama if you replace the batteries, press B and download before 30 seconds after you press B passes.
Nazotchi: you can't get it. Mametchi: Does not ONLY come from the crab teen, Piroriroritchi, It comes from Young Mametchi, Nikatchi (bump on head teen) Obotchi, and Patapatatchi. I got it from Patapatatchi, Young Mametchi and Obotchi. NEVER Piroriroritchi or Nikatchi.
Keep your puppy locked up in a room while you're awake, or keep your tama in a safe place outside of where the dog goes. Or put it in a place it doesn't know about.
Pooty
Pooti
Poote
Poota
Pooto
Pootu
Poot
Poot!
Poot?
Poo
Tails
Clay
Roget
Zater
Lil D
Roast
Spark
Elvis
Stego
Santa
Bunny
Don't mind the 'Poot' names, I used them.