Mammals:
* Grazers: Cows, horses, sheep, goats, deer, giraffes, zebras, bison
* Browsers: Elephants, giraffes, deer, rabbits, squirrels
* Rodents: Mice, rats, squirrels, beavers, hamsters
* Other: Pandas (mostly bamboo), sloths, koalas
Birds:
* Seed eaters: Finches, sparrows, doves, parrots
* Fruit eaters: Toucans, parrots, hummingbirds
* Grazers: Ducks, geese, chickens, turkeys
* Other: Flamingos (algae and brine shrimp)
Reptiles:
* Tortoises: Herbivorous turtles, often eating grasses, weeds, and fruits
* Iguanas: Primarily herbivorous, consuming plants and flowers
* Some lizards: Various lizard species are mostly herbivorous, like the green iguana
Insects:
* Grasshoppers: A classic example, known for their plant-eating habits
* Caterpillars: Many caterpillars feed exclusively on specific types of plants
* Aphids: Small insects that primarily suck sap from plants
Fish:
* Herbivorous fish: Some fish species like parrotfish and surgeonfish primarily graze on algae
This is just a small sampling of the diverse herbivores in the animal kingdom. There are many more species that rely on plants for their sustenance!