Hi Relnor...
Thanks so much for posting the url to the wiki pet page.The wiki is a great resource isn't it? I like it for a lot of things, and it was the first place I went when I first started looking for information on pets. Their pet page has a very good overview.
However, soon after I found the wiki page, I found
"A guide to pets, by Jenosavel and Epinephrine," a section (Pet Evolution) of which I linked to in my previous post, and I can say with total confidence that this impressive collaboration is without a doubt the most comprehensive GW pet guide in existence.
If you like the wiki page on pets, I think you'll love this one. They've done an amazing amount of research (far more quantitative than qualitative) and provide an abundance of quantitative data such as the pet health chart below. If you lose this thread and link to their wonderful work, just remember that it's in the Community Works (Tools and Resources) section of The Inner Circle.