just a few things I wish I could see (I'm a visual person, not a numbers person)
-Pet Level Pie chart, so I can see what pets I have the most level of. Or a bar graphs... Blue bars for rares, green for uncommon etc. X axis is pet levels 1 to 25, Y axis is the numerical marker. Maybe have a dulled color on top of the bar to reflect duplicates?
-Which pets are "hard" uncommons. Meaning I would need to use a Stone on them to make them Rare. ex: Egbert
-A Radar Chart of strengths and weaknesses (or just strengths) ex: Infinite Whelpling has Sleeping Gas(dragon), Weakness(magic), Early advantage(elemental). Is Sleeping Gas a deadly good move to use on a Magic? or is kinda "eh." So I would see something like 3 peaks for 3 strong moves or 1 peak and 2 valleys. And maybe in different colors so I could identify what types to use it against. ...I saw these things for pokemon cards to help aid players. This would be particularly nice with breeds so you can see how a move fair separate from the specific stat weights. Then use that information to select a breed to maximize the performance. (This bit might actually be more useful in a line graph with the breeds as a variable)