Original sentence
A toucan sleeps with its large beak on its back.
Grammar check and explanation
- Subject: "A toucan" is correct.
- Verb: "sleeps" is the simple present tense and matches a general fact. If you mean right now, you could use "is sleeping".
- Possessive pronoun: "its" is correct for a singular animal; do not use a apostrophe in its.
- Object/phrase order: The phrase "with its large beak on its back" is a correct prepositional phrase describing how the beak is placed.
- Note: In real life, a toucan’s beak is very long. It is unusual for the beak to rest on the back, but the sentence is grammatically fine.
- Punctuation: The sentence ends with a period. That is correct.
Possible small edits
- To describe a current action: A toucan is sleeping with its large beak on its back.
- To emphasize the unusual resting position: A toucan sleeps with its large beak lying on its back.
- To be extra clear about size: A toucan sleeps with its very large beak on its back.
Bottom line
The sentence "A toucan sleeps with its large beak on its back" is grammatically correct for a simple statement. Use is sleeping if describing what happens right now.