Sheep & goats tend to braze VERY close to the ground.
That means it takes longer for grass to get back up to a razing depth for cattle.
Goats browse, not graze. The only time they eat close to the ground is when they’re penned in a small area and are forced to eat it down that low. One of their preferences is the top leaves on saplings. They get up on their hind legs to reach and maybe bend the sapling over if small enough. They’ll also eat anything with thorns, from the top down. It’s a wild thing to watch them munch their way down a blackberry cane with half inch long thorns.
There’s only about a 15-20% overlap in what goats and cattle eat.(unless there’s only one or two things to eat)
https://content.ces.ncsu.edu/co-grazing-meat-goats-and-beef-cattle-has-many-advantages
“” Given the opportunity, goats will select over 60% of their daily ration from brush (multiflora rose, saplings, young leafy trees, black locust, briars, brambles, sumac, honeysuckle, privet, Virginia trumpet creeper, etc.) and broadleaf weeds (pigweed, dock, horseweed, wild lettuce, lambsquarters, poison ivy, etc.) over herbaceous species such as fescue, bluegrass, clover, orchardgrass or crabgrass pastures “”