Learn Irregular Plural Animal Nouns in English

English is full of rules—and exceptions! One common challenge for learners is irregular plural nouns, especially when it comes to animals. In this short video, you’ll learn four important examples:
• Sheep – One sheep, many sheep. The word stays the same!
• Wolf → Wolves – The ‘f’ changes to ‘v’ and adds ‘es’.
• Ox → Oxen – A very old word with a unique plural.
• Cactus → Cacti – From Latin, this plural is common in scientific English.

These examples break the usual plural pattern of just adding -s or -es. Learning them helps you sound more natural when speaking English in everyday situations, from talking about nature to reading articles or watching documentaries.

Watch the video and point along with the examples to help remember them! Repetition and visual association make it easier to retain these tricky exceptions.

Want to learn more? Keep practicing with our other grammar and vocabulary videos in the FluentJoy app. English doesn’t have to be confusing—especially when you have fun while learning!