How do you say "it" in Spanish?
For example, what is the best way to say "it is good" or "it is a dog"? Thank you for any help!

Question

Answer

The direct translation would be "Eso".
Therefore your senteces are to be written like this:
Eso es bueno.
Eso es un perro.

Although if I must admit, it's not often used in such way, but rather you'd hear/read them as:

Es bueno.
Es un perro.

Which -even though I ignore the actual reason, and therefore can't faithfully explain it to you- would be some manner of "abbreviation", just as when instead of writing "It is" the "It's" appears:

It's good.
It's a dog.

It is definitely not the same mechanism, but rather just an analogy the one I'm using.

Hope it helps!.

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