"This animal is rare" would be החיה הזאת (היא) נדירה. I often mix those formations up, too!

Where is the word "animal" here? Doesn't this literally say "this she is rare," or more properly "This is rare"?

Why can't you say: This animal is rare?

What is the difference between חיה נדירה and בעל חיים נדיר?

What is the difference between חיה נדירה and בעל חיים נדיר?

My application translates this sentence incorrectly as : "they will be back in one hour"