In the Pokemon anime, why is Furret considered ground type?

Question

While Ash was battling three people to get into the silver league, Brock said that it was a ground type. Why?

Answer 1

It was an error.

Comments

Just like in the following episode where Macey has an Electabuzz left and  Brock calls it a fire type?

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Yep.
There are loads of errors made through dubbing. If you go on a episode summary on Bulbapedia, they have a section dedicated to errors.

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Brock is a noob.

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