What is the stats for a max stat pet?

A max stat's base, unlevelled stats will be 2000 hp, 200 mana, 100 strength, 100 intelligence, 100 dexterity, and 100 agility.
Superstats are a different story. They generally have 2000+ health, 200+ mana, 100+ str/int/dex/agi. This is because super stats are bred with lost grove tameds, which have wild stats. Wild stats are displayed as Strength: 16 (11 + 5) on a pet's page, and are exclusive to the lost grove.
Here is an example of a max stat
Here is an example of a super stat

ohhh ok, does infertile pets have a boosted stat or...?

and that aeri is beautiful btw

Infertile means the pet can't breed (This is something the owner of the pet does themself via Infertility Philter or Infertility Kit, is irreversible, and typically is done to project pets that are going to be sold so that other people cannot undercut the breeding project or the like)

(Also, the previous mana cap was about 120 (differed for some species, such as puffs where the highest mana that existed was about... 109?) so there are plenty of projects that were done before it became possible to raise mana via nurture and philter that don't have 200 mana but could still be counted as 'max' stat, but are no longer actual max stat)