Kero or Gero?

[Keiichi-chan]

Which is the sound that frogs make? And which is more commonly used? Thanks.

 

[David Hallgren]

けろけろ I believe

 

[NANGI]

Konnichiwa Keiichi-chan!

Kero-Kero.
Gero-Gero.
Geko-Geko.
All of them are frog's sound.

NANGI

 

[Hiroyuki Nagashima]

kero kero = The cry of a lovely frog

Animation "Staff Sergeant KERORO" is crying with KEROKERO.

Gero-Gero = Eerie or the cry of an ugly frog

 

[Keiichi-chan]

Arigatou!
I also heard kerokero is used for small frogs and gerogero for larger ones. Is this true?