Is there anything that tastes good but is poisonous to eat?

Yes, unfortunately, there are many things that taste good but are poisonous to eat. Here are some examples:

Plants:

* Deadly Nightshade (Atropa belladonna): The berries are sweet and attractive but contain atropine, a deadly poison.

* Water Hemlock (Cicuta maculata): The roots taste similar to parsnip or celery, but are highly toxic.

* Castor Bean (Ricinus communis): The seeds contain ricin, one of the deadliest poisons known.

* Oleander (Nerium oleander): All parts of the plant are poisonous, but the flowers are particularly attractive.

* Angel's Trumpet (Brugmansia): The trumpet-shaped flowers are beautiful and fragrant, but all parts of the plant are poisonous.

* Rhubarb (Rheum rhabarbarum): The stalks are edible, but the leaves contain oxalic acid, which is toxic.

* Mushrooms: Many mushrooms are poisonous, and some even look similar to edible varieties. Always be absolutely sure of the identification before consuming any mushroom.

Animals:

* Pufferfish (Fugu): The liver, ovaries, and skin of this fish contain tetrodotoxin, a deadly neurotoxin. Only trained chefs are allowed to prepare fugu in Japan.

* Some shellfish: Certain types of shellfish can accumulate toxins in their flesh, making them poisonous to eat.

Other:

* Poisonous berries: Many types of berries, like those from the yew tree, are poisonous and can cause severe illness or even death.

* Certain seeds: Some seeds, like apple seeds, contain cyanide, although the amount is typically very small.

* Certain fungi: Some fungi, like poisonous mushrooms, can cause serious illness or death.

It's important to remember that the above is not an exhaustive list and there are many other plants and animals that can be poisonous. Never consume anything you are not 100% sure is safe to eat. If you suspect you or someone else has ingested something poisonous, seek immediate medical attention.