Japanese help please?

Question:

There's one part that goes:
"doushite inu wa kusai desuka."
"yogorete ite nurete imasu kara"
I think I understand the first part (Why does the dog stink?), but what does the second part mean? Especially "ite". I can't figure out what that is or means. I learned the words for dirty and wet, but don't know why "ite" is there or what for.

Also one thing said:
"Boku wa haburashi de wa o migaite imasu."
in romanji. In hiragana it had "ha" は, but when it did it in romanji why would it change "teeth/tooth" (ha) to "ga"? I couldn't understand?

Thank you

Answer:

"yogorete ite nurete imasu kara" - because they are dirty and wet

In order to string two or more indepenent verbs together, all of the associated verbs in the string, except for the last one, must be transformed into the gerund -te form. For example, these forms of to be dirty and to be wet (yogorete iru + nurete iru = yogorete ite nurete iru)