Dodos used to exist. In Mauritius, probably becoming extinct in the 17th century. They were flightless birds, which may account for why they died out; Mauritius is an island, so nowhere else to go. Which probably caused them to become depressed and hence not attractive mates.
Surely a "flightless bird" is an oxymoron? Ask any five year old what distinguishes birds from other creatures and they will surely answer "they fly". So who came up with this ridiculous nomenclature? Does it perhaps describe a desire to fly? Ask a penguin or an ostrich what they most regret in their lives and they will say "I wish I could fly but I can't".
This is obviously very sad and they need help. At http://www.teachthesoul.com/2019/04/training-penguins-to-fly/ there is a moving story of penguins [who] formed a committee to find a motivational speaker who would help them [to learn to fly]. I'm not going to spoil the story for you; check it out. Maybe they are just channelling their inner Greta Thunberg and saving the planet.
It's not clear that unicorns (literally "one horned") ever existed, although there are apparently records of seals depicting unicorns from the Indus Valley Civilization. Also known as the Harappan Civilisation. A while ago.
Like that one.
There are a number of Biblical references to unicorns. Psalm 22: "Save me from the lion's mouth: for thou hast heard me from the horns of the unicorns." The coat of arms of the UK shows a unicorn as the symbol of Scotland, facing off the lion of England.
Popular usage of "unicorn" now is to indicate something fanciful and almost certainly unachievable, like a billion dollar start-up, a bridge from Scotland to Northern Ireland or a wall between Mexico and the US. Or a UKIP Prime Minister.
Use of "unicorn" also occurs in LGBTQ culture. Just for the record.
Moving on to the yeti. In Himalayan folklore, the Yeti is a monstrous creature. Some British military guy in the 1920s coined the phrase The Abominable Snowman when he saw some large footprints. Possibly this herd of yeti:
No-one has ever seen Mr Yeti. But then no-one living has ever seen a dodo or a unicorn, so who knows one day...?
You can play "Face The Yeti Society" on a gaming platform called Sleep. Maybe it's a calm, soothing game.
If you see a dodo, unicorn or yeti in your back garden, please take a photo and share it in your comment to this post.
“To attain knowledge, add things everyday. To attain wisdom, remove things every day.” Lao Tse