whose cat or who’s cat
The correct phrase depends on what you mean, but if you are asking about ownership, “whose cat” is correct.
“Whose” and “who’s” sound similar, but they have completely different grammatical functions. This is especially easy to confuse when writing questions such as “whose cat is this?”
“Whose cat” means “which person’s cat”
Use whose to ask who something belongs to.
For example:
- Whose cat is this?
- Whose cat is sitting on the porch?
- Whose cat keeps coming into my yard?
- Do you know whose cat this is?
- Whose cat was at the veterinarian?
In each example, “whose” asks about ownership or possession.
So if you see an unfamiliar cat and want to ask who owns it, you would say:
“Whose cat is this?”
Not “Who’s cat is this?”
What does “who’s” mean?
“Who’s” is a contraction. It can mean either:
- who is
- who has
For example:
- Who’s at the door? = Who is at the door?
- Who’s taking care of the cat? = Who is taking care of the cat?
- Who’s got the cat carrier? = Who has got the cat carrier?
Because “who’s” means “who is” or “who has,” it normally cannot be used before a noun to show possession.
That is why “who’s cat” is incorrect when you mean “the cat belonging to whom.”
Whose vs. who’s examples
| Phrase | Correct? | Meaning |
|---|---|---|
| Whose cat is this? | Yes | Who owns this cat? |
| Who’s cat is this? | No | Incorrect if asking about ownership |
| Who’s feeding the cat? | Yes | Who is feeding the cat? |
| Whose cat is sleeping here? | Yes | Which person’s cat is sleeping here? |
| Who’s the cat’s owner? | Yes | Who is the cat’s owner? |
The easiest way to remember the difference is to replace “who’s” with “who is” or “who has.”
If the sentence still makes sense, “who’s” may be correct.
For example:
Who’s feeding the cat?
becomes:
Who is feeding the cat?
That works.
But:
Who’s cat is this?
becomes:
Who is cat is this?
That does not work.
The correct version is:
Whose cat is this?
Why is “whose” used for ownership?
“Whose” is the possessive form of “who.” It asks about the person or people to whom something belongs.
You can use it with animals, objects, places, and other things.
Examples include:
- Whose dog is barking?
- Whose house is that?
- Whose car is parked outside?
- Whose phone is ringing?
- Whose cat is sitting on the fence?
The same grammatical rule applies regardless of the noun.
Is “whose cat” always about legal ownership?
No.
“Whose cat” can refer to everyday possession or responsibility rather than formal legal ownership.
If someone asks:
“Whose cat is that?”
they usually mean:
“Who does that cat belong to?”
They are not necessarily asking who is legally recognized as the animal’s owner.
For example, a person might ask “whose cat is this?” simply because they have never seen the animal before.
What is the difference between “whose cat” and “who owns the cat”?
These questions are very similar.
“Whose cat is this?” asks for the person the cat belongs to.
“Who owns this cat?” directly asks about ownership.
In casual conversation, either can be appropriate.
For example:
Whose cat is sitting outside?
and:
Who owns the cat sitting outside?
communicate essentially the same basic idea.
The first uses the possessive pronoun “whose,” while the second uses the verb “owns.”
Common mistakes with whose and who’s
One of the most common mistakes is writing:
“Who’s cat is this?”
when the intended meaning is:
“Whose cat is this?”
Another common mistake is assuming that the apostrophe in “who’s” indicates possession. In this case, it does not.
The apostrophe in “who’s” indicates that letters have been omitted from “who is” or “who has.”
This is different from possessive nouns, such as:
- the cat’s bowl
- Sarah’s cat
- the dog’s leash
“Cat’s” in “the cat’s bowl” is possessive, but “who’s” is a contraction.
How do you remember which one to use?
Use this simple test:
Can you replace “who’s” with “who is” or “who has”?
If yes, “who’s” may be correct.
If you are asking about ownership, use “whose.”
For example:
Whose cat is this?
You cannot replace “whose” with “who is.”
That tells you “whose” is the correct word.
Frequently Asked Questions
Is it “whose cat” or “who’s cat”?
“Whose cat” is correct when asking who owns or possesses the cat.
Is “who’s cat” ever correct?
The exact phrase “who’s cat” is generally not correct when you mean “whose cat.” “Who’s” means “who is” or “who has.”
How do you use “whose cat” in a sentence?
You can say, “Whose cat is sleeping on the couch?”
What does “whose cat” mean?
It means “which person’s cat” or “who does the cat belong to?”
Is “whose” possessive?
Yes. “Whose” is used to ask about possession or belonging.
What does “who’s” stand for?
“Who’s” is a contraction of “who is” or “who has.”
Conclusion
If you are asking who a cat belongs to, use “whose cat.” For example, “Whose cat is this?” is the correct sentence.
Use “who’s” only when it means “who is” or “who has.” Remembering this substitution test makes the difference between the two words much easier to recognize.