Huge spider-like farm animals raised by the Galardonians, one of which spends hours slobbering over Brad Boimler in Second Contact and so accidentally provides the cure for a shipboard plague.
The Galardonian spider cow is a towering, many-legged animal that looks terrifying but is a placid herbivore, kept as livestock by the farmers of Galardon. It feeds harmlessly by suckling at whatever it gets hold of, covering it in thick slime.
It appears in the first Lower Decks episode, Second Contact, in 2380. Boimler follows Beckett Mariner on the planet, believing she is breaking the rules, when in fact she is quietly giving farming equipment to needy locals. The pair are chased by a spider cow, which catches Boimler and sucks on him for a long while without doing him any harm.
Back on the USS Cerritos, where a virus from the surface has turned much of the crew into raging zombies, Doctor T'Ana finds that the slime coating Boimler is the cure.