I thought surely you meant the "Duracell Bunny", however the Energizer Bunny does indeed exist, and apparently although it's the later of the two, Energizer successfully registered the battery-powered bunny trademark in the US and Canada[1].
Here in the UK I'd say the Duracell bunny is the first to most peoples' minds.
Haha, today I learned the opposite of what you learned.
"In Europe & Australia the term "Duracell Bunny" has entered the vernacular as a term for anything that continues indefatigably while in North America the term "Energizer Bunny" has a similar connotation."
Believe it or not I actually hesitated when writing that thinking it was supposed to be Duracell in my mind, but when I said it out loud I was more comfortable with Energizer.
The power of advertising and repeated exposure. It works :(
I thought surely you meant the "Duracell Bunny", however the Energizer Bunny does indeed exist, and apparently although it's the later of the two, Energizer successfully registered the battery-powered bunny trademark in the US and Canada[1].
Here in the UK I'd say the Duracell bunny is the first to most peoples' minds.
Yes, yes, it's Friday!
[1]: https://en.wikipedia.org/wiki/Duracell_Bunny