You are right here. The Rematch string is part of the Info box, and as such it should be parsed correctly. (The string that contains the correct and breed/damage-specific min health requirements). This should be enough, but, I think there are also folks that aren’t using Rematch. They also should know of the type-specific min health requirements. Unfortunatly the default forms of the page don’t offer any detailed entries for the min health. They only offer one entry (for all damage types), and I always put the worst-case min health there (for pets that are weak against the expected damage type)
Frequently, we are getting many questions from our customers, especially after Blizzard’s announcement about World of Warcraft Classic at BlizzCon 2017, how to farm gold in Vanilla World of Warcraft, currently on Light’s Hope Lighbringer, Elysium Nighthaven and Twinstar Kronos-WoW realms. So, we are glad to share our experience and some knowledge with you. It might be not a discovery for someone but it is good to brush things up we all know and summarize them in one place. We are looking forward to publish more related articles to help and save your time. This guide may help you not in just Vanilla WoW but in any other expansion you are playing.
If you like playing solo – there’s no better option than the Hunter. Hunter is considered the most efficient solo-leveling class so you’ll ding level 60 in no time. As a Hunter, you will be able to tame various beasts across the world and use them as your pets. Pets help you tank groups of mobs and enable you to tackle some of the group quests alone. However, their PvE power falls off in the end-game, but their PvP potential is enormous. Skilled Hunters are a pain to deal with since it’s almost impossible to catch a masterful hunter.
Only really to expand on Gráinne's comment as regards the 'collecting' and 'roster development' sections - which are, as said 'distinct' although they are intrinsically linked - I would like to point you in the direction of the in-game Achievements > Battle Pets > Collect tab. There are a series of achievements called Raiding With Leashes, pretty much all of which can be completed via the auction house - if you have the gold/inclination - or by completing old raids.