Research notes for dog and cat owners

Dog and cat care, graded by the evidence.

Every claim on this site shows how strong the research behind it is, where it came from, and when it was last checked. No guessing which advice to trust.

✓ Sources on every claim✓ Review date on every note✓ Written by a dog owner, not a sponsor
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Every claim carries a grade

We look at the studies, vet guidance and owner experience behind each piece of advice, then rate it in plain words.

StrongSeveral good studies agree
ModerateReal evidence, with limits
EarlyPromising but thin
WeakMostly anecdote or conflicting
Not supportedThe evidence points against it
How a claim looks, from “Why does my dog eat grass?”

Dogs’ wild ancestors ate plant material along with prey

Evidence review in progress
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Frequently asked

Questions friends and readers ask most, answered from real experience first.

Why does my dog eat grass?
Gilbert JonesFrom my own dog · personal experience

In my experience, grass eating has been a normal mix of instinct, taste, digestion help and boredom. Talk to a vet if your dog eats large amounts or seems unwell.

I first noticed it on a regular Tuesday morning. After his usual walk he headed straight for the patch of grass by the fence and started chewing like it was the most normal thing in the world.

At first I assumed he was just bored. He does the same thing on days I’m working late and he’s been inside longer than usual — he’ll wander over, sniff around, and graze for a few minutes. But he also does it right after we’ve been out playing, so it isn’t only boredom or anxiety.

Read the full answer and the evidence →
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