Labels: animal | mammal | text | lion | big cats | fang | roar | yawn | masai lion OCR: MAKING SOUNDS Roaring Mouth C ATS PRODUCE a range of vocal communications by modifying the sound formed by their larynx. The roar is a full-throated sound made by large cats to defend their territory. Some cats, including tigers, also roar to attract a mate; in lions it also helps unite the pride. DEEP ROAR The lion's roar is a low, thundering sound, produced with the mouth wide open.