Here is a list with some of my favorite Pokemon secrets and facts that I've been compiling for some time. Enjoy!
Poliwag’s signature swirl pattern is meant to look like the visible intestines of tadpoles.
When Paras evolves into Parasect, the parasitic mushroom on its back actually takes over the host, which explains the Pokémon’s blank, white eyes
Pikachu’s name is a combination of the Japanese onomatopoeia for sparkle, pikapika, and the sound of squeaking, which is expressed as chūchū.
Magneton is made up of three Magnemites and should logically weigh three times as much, but Magnemite weighs in at 13.2 pounds and Magneton weighs 132 pounds.
"Mr. Mime" the pokemon can in fact be a girl, however the name of the pokemon doesn't actually change. She would still be a Mr. Mime.
Spinda isn't an often-used Pokemon, but it has a pretty interesting trait. No two Spinda's are the same, and to ensure that, the game developers created over 4 billion unique spot patterns for Spinda to have.
Many Pokemon names include numbers, The original legendary trio of Articuno, Zapdos, and Moltres include the Spanish words for one, two, and three (uno, dos, tres). Deino and his evolutions include the German words for one, two, and three (ein, zwei, drei).
As of the sixth generation of Pokémon, there are four Pokémon with palindromes as names. This means that their names are spelled the same forwards and backwards. The first Pokémon to use this pattern of naming was Eevee from the first generation. Ho-oh and Girafarig were introduced in the second generation. Finally, Alomomola was added in the fifth generation.
Aside from Pokémon with palindrome names, there are also several Pokémon whose names are a word written backwards. The most popular and widely known of this type are Ekans and Arbok from the first generation. Ekans and Arbok are both designed to look like snakes. Therefore, Ekans is simply "snake" backwards. While Arbok's name backwards, "kobra," is not a word, but it is phonetically the same as "cobra," a type of snake. Finally, the fourth generation Pokémon Rotom's name is the word "motor" backwards. This is a reference to the ability of Rotom to assume the shape of certain motor-based appliances, namely a washing machine, refrigerator, lawn mower and microwave.
And if you want to share some of yours, just go ahead in the comment section.