system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] How are Banthas able to survive on Tatooine?

Their woolly coats and large size make no sense. What do they eat? They have tusks but no real identifiable predatory body parts and we've never seen them run so what do they eat if they're herbivores?

I realize words like herbivore or mammal don't need to make sense on an alien world but I see no alternative.

EDIT: This is speculation from Legends but maybe the Rakata engineered them when Tatooine was still lush like how Jolee hypothesized the Wookiees were "gardeners" on Kashyyyk. Maybe the Banthas and Wookiees are distant relatives via Rakatan genetic engineering? Still doesn't explain how they keep thriving now that it's a desert unless they were made to be very hardy.
gpt
They forage for scrub brushes and black melons in the desert. Their shaggy fur helps reduce sunlight on their skin and sand blown into them. It's a great heat regulator as its fairly light and airy unlike a wookies fur. The horns are used in mating rituals and defense against dewbacks and small krayt dragon attacks as well as IIRC woolas a dog like animal native to tattoine. They're similar to camels of our world in that they conserve energy and water for long periods of time despite appearances of being ill equipped for the desert.