The common asparagus fern is only named a fern due to how it looks like one. It is actually not a fern at all and is a member of the lily family. While not poisonous the sap does cause irritation and contact dermatitis. This plant can be found on almost every continent but prefers warm humid climates (70F) and sandy soil underneath a canopy of trees. 

The purple foxglove, or lady's glove, is a beautiful flower, however, can be highly toxic with the right amount. From any foxglove, you can receive digitalis poisoning from ingestion. Purple foxglove can be found in quite a few continents but is heavily populated in the United States and Europe. This is a hardy plant growing in zones 4-10, meaning they can handle low temps of -30 all the way through to 30 degrees Fahrenheit, however, they start to wilt if the temperature goes over 90 degrees Fahrenheit. While they can grow in almost any soil type but prefer well-drained moist soil. As most plants are purple foxglove is a photoautotroph, meaning it utilizes photosynthesis. 

The Opossum is considered a small Marsupial compared to its family members, being around the size of a domesticated cat, 13-22 inches long.  With a long coat of grey and white fur. Opossums can be found all the way from Costa Rica to Canada. Opossums are omnivorous and eat %95 of the ticks they come across. Opossums prefer woodland areas but are also commonly found in residential areas. As opossums evolved from South America's tropic rainforest to this day, they are unable to store fat reserves and thus cannot handle colder temperatures. 

The ringtail is a mammal and a part of the raccoon family. This creature is known for having brown fur with a white underbelly, with its tail being brown and white in a ring pattern. The ringtail is omnivorous, eating berries and bugs year-round, however, during the winter their primary foods are small vertebrates. They can be found in Mexico and into the southern parts of the United States. The ringtail prefers rocky mountains and slops for their habitat. 

The steller's jay is closely related to the blue jay but shouldn't be mixed up. This is an amniote, meaning this creature lays eggs but is not from the amphibia class. These birds are omnivores, eating nuts, seeds, and berries, along with invertebrates, and baby birds, among other things. This means the Steller's jay will eat the Montezuma dwarf crayfish and the Mexican duck if the need arises. Steller's jay is almost always found in wooded areas and the occasional residential area.

The Mexican duck, while currently classified as a least concern they used to be endangered due to overhunting and habitat loss. The Mexican duck is a subspecies of the mallard, a clear way to identify them is that the mallard had bright green feathers on top of their head. They can be found in Mexico and the southern portion of the United States, mainly the wetlands. These birds are omnivorous and will eat many different plants, they will also eat insects, invertebrates, and small fish. That means the Montezuma dwarf crayfish is one of their prey. Now, this is where things can get complicated, the Mexican duck also tends to eat earthworms, and so do the shovel headed earth worms, and as these worms are invasive, they are taking resources from the Mexican duck, thankfully the ducks have plenty of other resources. 

There isn't much information on this species, however, it is quite versatile when it comes to the water it will live in. This subspecies of crayfish is only found in the Mexico wetlands where they are thriving.  These crayfish love brackish water and are one of the main prey of the axolotls, along with the Mexican duck, and humans.

Not only does the shovel-headed garden worm look creepy, but they're also not the safest creature either. These guys are toxic, they have a neurotoxin called tetrodotoxin which is also found in pufferfish. The shovel-headed garden worm uses asexual fragmentation, they release body fragments, which within two weeks will regenerate a head plate. Now this species is invasive to Mexico as they originate from Southeast Asia, and thankfully there are not a lot of them in the area, and have yet to cause to much damage to the environment. What is unique about this worm is that it's a flatworm, flatworms are well-known for being parasitic, however, this specific species are free living. 

This fungus is one of the reasons why names need to be peer-reviewed before. Despite its odd appearance, this fungus is completely edible. It is recommended to eat them before they mature, as when they are mature, they give off a pungent odor. You can quite communally find them in the United States. They love to stay in well-enriched soil, especially near decayed logs, woodchips, and manure. 

The blushing rose is a common fungus mostly found in Europe. The blushing rose gets its name from the colors it shows as it matures, and from the petal-like shape it forms. While it is non-toxic, it is considered inedible.  This fungus prefers the cooler temperatures of the northern hemisphere, however, can be found in some warmer climates. They are found inhabiting hardwood trees.