Grabbins are identifiable by their disruptive camouflage adaptation, which allows them to blend amongst Umbrella trees with ease. There is sexual dimorphism between the species, with females being larger than males. Both males and females have flattened bodies, spindly legs, and a sensory plate that identifies scents, ‘tastes,’ and pheromones in the air for locating fellow Grabbins and prey species. They also use their sensory plate to mask their own scent with pheromones.
Grabbins live in terrestrial and arboreal habitats, spending the majority of their lives resting and hunting among the uppermost branches and tops of Umbrella Trees. Grabbins will rarely stray from covered habitats and will almost never venture to the understory of the canopy. They are extremely territorial and aggressive, with both males and females experiencing intraspecific competition for territory and intrasexual competition for mating opportunities.
Grabbins are carnivores that eat primarily spotted gliders. Grabbins ambush their prey from above, leaping upon their victims with ferocious speed and agility.
Grabbins are notoriously violent during the mating season. Males and females mate by an ambush-style sexual reproduction technique. Males will quickly mount and fertilize females before escaping, as grabbins are swift to kill one another. Grabbins practice polyandry, as multiple males will mate with one female. Females practice sperm storage and can hold a male’s sperm for months before using it to inseminate her own eggs. Gestation lasts about 3 months, after which a grabbins gives birth to 2 or 3 live young, known as cubs.
Surprisingly, the violent tendencies of grabbins toward other members of their species has not led to significant declines in their population.