Mammals:
* Echidnas: The other monotremes, sharing the platypus's unusual egg-laying traits.
* Kangaroos: Depending on the location, various kangaroo species might be present.
* Wallabies: Similar to kangaroos, but smaller.
* Possums: Various possum species are common in Australian forests.
* Bandicoots: Small, burrowing marsupials.
* Wombats: Large, burrowing herbivores.
* Koalas: While mostly found in coastal regions, some koalas may share habitat with platypuses in forested areas.
Birds:
* Waterbirds: Various ducks, geese, herons, and other waterbirds share the platypus's aquatic habitat.
* Kookaburras: A common bird found in woodlands and forests.
* Lorikeets: Colorful, nectar-feeding birds.
* Cockatoos: Large, noisy parrots.
Reptiles and Amphibians:
* Snakes: Various snake species, including some venomous ones, are found near water.
* Lizards: Skinks and other lizards are common in the platypus's environment.
* Frogs: Various frog species may be found near waterways.
Fish:
* Native fish: A variety of fish species are found in the same rivers and streams as the platypus.
Insects and Other Invertebrates:
* Insects: Many insect species, including aquatic insects, are food sources for the platypus.
* Crayfish: A common crustacean found in freshwater streams.
This list provides a general overview of potential neighbors for a platypus. The specific species present will depend on the region and local habitat.