I'm french and I'm here to help you ^^.
"Niche" is pronounced like in "Fish" with the "i" being more a "ee", and you have to pronounce the french "e" at the end of the word (almost like the "a" in "above").
Then, you'll say to your french dog :
"File dans ta niche !!!" (Feel danta nish a (danta like in santa)
French is complex ^^.







