Why Do Cats Scratch? The Science, Simply
Quick answer: cats scratch for four reasons: to shed the worn outer layer of their claws, to stretch, to leave scent and visual marks, and to release excitement or stress. It’s normal, healthy behaviour. The goal is never to stop it, only to steer it.
1. Claw maintenance
A cat’s claws grow in layers. Scratching pulls off the old, blunt outer sheath to reveal a sharp new claw underneath. You’ll often find these crescent-shaped husks near a well-used scratcher. That’s a sign it’s working.
2. A full-body stretch
Watch a cat scratch after a nap: front legs reach up, back arches, toes spread. Scratching works the shoulders, back and legs. That’s why cats love tall, stable surfaces they can reach full length on, like a tall sisal pad or a cat tree post.
3. Marking territory
Cats have scent glands between their toe pads. Scratching leaves an invisible scent message and a visible one (the marks). That’s why cats scratch in prominent places: doorways, the sofa in the middle of the lounge, near where they sleep. A scratcher hidden in the spare room misses the point.
4. Emotion
Cats scratch when they’re excited (you just got home), frustrated (the bird got away), or a bit stressed (a new cat next door). Extra scratching can be a clue that something in her world has changed.
What this means for your furniture
| Why she scratches | What to give her |
|---|---|
| Claw care | Rough textures like sisal |
| Stretching | Tall, sturdy, doesn’t wobble |
| Marking | Scratchers in visible, social spots |
| Emotion | Play sessions and a scratcher by the front door |
Ready to save the couch? Read the full guide: How to Stop Your Cat Scratching the Couch, or shop Save My Sofa.
