Why is cat poop so smelly?

Sulphur compounds make cats’ poop smelly, as for humans.

I am not sure that all cat poop is ‘so smelly’ (i.e. very smelly) but if it is there is a reason for it: protein.

Smelly cat poop!
Two useful tags. Click either to see the articles: Toxic to cats | Dangers to cats

Smelly cat poop! Raw image in public domain. Background added etc..

We all know that a cat’s diet should be relatively high in protein. So why does protein cause smelly poop?

Useful links
Anxiety - reduce it
FULL Maine Coon guide - lots of pages
Children and cats - important

The answer I have from a forum – and I can’t vouch for the veracity of the information – is that the amino acids in the proteins contain sulphur. It sounds like a good answer.

My research as I write:

All proteins are made of building blocks called amino acids.

My research tells me that methionine and cysteine are amino acids containing sulphur. Interestingly, taurine is an amino acid and it too contains sulphur. We know that taurine is an essential nutrient in a cat’s diet and commercial cat food always contains it.

Muscle meat is rich in the animo acid methionine. High cysteine foods are beef, lamb, chicken, fish and pork for instance.

So the forum advice is correct. Why does sulphur smell? Well we are into chemistry. Apparently pure sulphur does not smell. It is sulphur compounds that smell.

I am going to guess and say that during digestion the pure sulphur in amino acids is turned into a sulphur compound (H2S) which makes the poop smelly.

Hope this helps.

P.S. Stink bombs bought commercially are made of hydrogen sulphide (H2S). This is the same compound causing smelly poop. It is the same for people.

[weaver_breadcrumbs class=’alt-class’ style=’inline-style’]

[weaver_show_posts cats=”” tags=”cat-poop” author=”” author_id=”” single_post=”” post_type=” orderby=”date” sort=”ASC” number=”2″ show=”full” hide_title=”” hide_top_info=”” hide_bottom_info=”” show_featured_image=”” hide_featured_image=”” show_avatar=”” show_bio=”” excerpt_length=”” style=”” class=”” header=”” header_style=”” header_class=”” more_msg=”” left=0 right=0 clear=0]

Useful tag. Click to see the articles: Cat behavior

Note: sources for news articles are carefully selected but the news is often not independently verified.

Michael Broad

Hi, I'm a 74-year-old retired solicitor (attorney in the US). Before qualifying I worked in many jobs including professional photography. I love nature, cats and all animals. I am concerned about their welfare. If you want to read more click here.

You may also like...

Leave a Reply

Your email address will not be published. Required fields are marked *