Is "Bakabon" written in English and translated to Japanese? The The Genius Bakabon has jokes like (after Bakabon is mistaken for a bear by a nearsighted hunter)


  Don't make that mistake again- I couldn't bear it.
  気をつけてくれないクマっちゃうな～～～と


And many many other puns, which I doubt work in Japanese. 

There is also an entire plotline where if he makes a pun then his boss won't fire him- e.g. After an overly long lunch Bakabon says


  Don't wring my neck we'll iron this out. (It's a laundry)
  ま　ま！　せんたく屋さん　しぼらないで　みずにながしっちょだい！


Plus,


  I wish you could forgive me.


And when sprayed by the boss's wife's perfume


  Whoa! you mist!


Is Bakabon written in English and translated to Japanese?
It's really not uncommon for anime which appear in English to have puns "translated" from Japanese.

One example that comes to mind is Persona (ペルソナ Perusona), which, when translated to English, ended up with the pun "Bear-sona!" said by the character Teddie (yes, like teddy bear), whose original Japanese name was Kuma (literally "bear" in Japanese), clearly not having such a pun.

Another rather complex example is this tongue twister, which is a very complex pun in both Japanese and English, using completely different bodies of text.

The studios which produced Tensai Bakabon were TMS Entertainment and Pierrot, both of which are rooted in Japan and produced the anime in Japanese. The original manga was written by Fujio Akatsuka (a native Japanese) and published in various Japanese shounen magazines by Kodansha and Shogakukan, both Japanese publishers.