Confusion arises over the plural of mongoose because many believe that mongeese (formed using the plural of goose) is an error. Both mongooses and mongeese are acceptable. Of note, mongooses is by far the more common plural.
Is the plural of mongoose Mongeese or mongooses?
"Mongeese" Totally Incorrect
The plural of Mongoose is Mongooses.
What is the plural version of mongoose?
plural mongooses also mongeese\ ˈmän-ˌgēs , ˈmäŋ- \