Pretty sure you're talking about WII/PS2...
If you're talking about Fish/Bugs:
http://strategywiki.org/wiki/Petz:_Dogz_2_and_Catz_2/Bugs
http://strategywiki.org/wiki/Petz:_Dogz_2_and_Catz_2/Fish
If you mean the zoo animals, here are all the ones I can remember:
Lion
Wild Boar
Emperor Penguin- DEFINITELY not life-sized
American Buffalo
King Vulture
Don't be surprised I'm actually using the species names... I am the animal person!!!
2 of them are : petpet ,& 3heart,
Press the minus button on your remote
Yeah, I think Petz: Dogz 2 and Petz: Catz 2 are similar, check them out!
love dogs2
beyfinding the cristel
you have to find a white star and walk up to it and press the a button then you have to win the mini game to get it to the zoo
there r none. you have 2 breed dogz, and gain points.
you smell and footsteps will appear and you will follow them
You have to get 2 puppies in the game (doesn't matter the breed) and then you can get pugs at the adoption center.
I would recommend nintendogs because it is the most realistic pet game that there is and you can chose from all different breeds of dogs and others...the problem with dogz and horsez and hamsterz and catz and etc. is that they are geared more toward younger children and aren't as realistic.
there is one for wii you just gotta look real hard cuz they barely sell ps2 games anymore haha (;
In Whisker Woods by the really short tree. You have to have 3 lives and you need to make sure you have 10 dig foods and an apple.