Cats
Cat poop, explained
Cats hide illness well, so the litter box is often the first place a problem shows. Here is what each change can mean, what to do today, and when it is a vet call.
Try it
Start with the cat poop chart for color and consistency, or the should I call the vet check if something else is going on, like straining or no poop for two days.
Heads up
A cat, especially a male, straining in the litter box with little or nothing coming out can be a urinary blockage, not constipation. That is Call a vet now.
Cat guides

Cat diarrhea
Cat Diarrhea: Causes and What to Do

Blood in poop
Blood in Cat Poop: What It Means and When to Worry

Litter box problems
Why Is My Cat Pooping Outside the Litter Box?
Coming soon: Mucus in Cat Poop: Causes and When to Worry; How Often Do Cats Poop?; Cat Not Pooping: How Long Is Too Long?; Cat Straining to Poop: Constipation Signs; Black or Dark Cat Poop: What It Means; Cat Vomiting: Causes and When to Call the Vet.