Asparagus fern (also called emerald feather, emerald fern, sprengeri fern, plumosa fern, and lace fern) is toxic to dogs and cats. The toxic agent in this plant is sapogenin—a steroid found in a variety of plants. If a dog or cat ingests the berries of this plant, vomiting, diarrhea, and/or abdominal pain can occur. Allergic dermatitis (skin inflammation) can occur if an animal is repeatedly exposed to this plant.

One of the most intelligent birds ever studied, the African grey parrot has an amazing ability to imitate human speech and precisely mimic sounds within the environment (for example, ringtones and doorbells). African grey parrots can be affectionate, entertaining, and rewarding companion animals; however, owners must be knowledgeable and conscientious to fully enjoy the qualities of African grey parrots. These birds prefer a routine schedule and a stable environment within their enclosure, and they require a substantial amount of interactive time with their owners to develop a trusting, enjoyable relationship. Therefore, African greys may not be appropriate for people who work odd hours, travel frequently, or spend a substantial amount of time away from home.