English Language can be weird

The English language can be a puzzle. Children (and people learning our language) often struggle with learning irregular plurals. When I was working in the schools this was an area of focus for a number of my students. Well today I came across a word that I had never thought of the plural form before so I decided to look it up. Mongoose. When I looked at it I thought "Is it like moose where the plural is the same as the singular form or is it like goose and it has an irregular plural form?" Turns out its a regular plural. Mongoose and with a plural form of mongooses. Who knew?