They can be. Roundworms are adapted to infesting dogs and cats primarily, but they can also infest humans. When they do so, they can cause severe problems including visceral larval migrans (when the...
Worms are invertebrates; not bugs.
they call a unicorn and eat a fairy then they fly away with the unicorn C:
You can get them by letting the dog kiss you in the face.
because they are a worm