2026 Latest: 7 Hidden Signs of Cat Anxiety – It's Not Just About Hiding

Has your cat been hiding more, eating less, or suddenly going to the toilet outside the litter box? They may be experiencing anxiety.

September is here. Across the UK, families are shifting from holiday mode back to daily routines. The kids are back at school. The house is quieter. But for many cats, this change in their environment is exactly what triggers anxiety. With over 11 million cats living indoors or in mixed indoor/outdoor homes in the UK, their sensitivity to stress is far greater than many owners realise.

Cats send very subtle signals when they're stressed – and the earlier you recognise them, the sooner you can act before it becomes a long-term health issue. The problem is, cats don't express discomfort in obvious ways like dogs do. They retreat. They hide. By the time owners notice something is wrong, the cat may have been anxious for quite some time.

According to RSPCA and Woodgreen data, feline behaviour problems are among the most common types of pet behaviour referrals in the UK – with anxiety and stress often at the root. This article helps you recognise 7 of the most common signs of cat anxiety and what to do next.

7 Signs of Cat Anxiety

1、Hiding more than usual

The RSPCA notes that one of the most common signs of a stressed or frightened cat is hiding more than usual.

Normal cat behaviour: Cats enjoy hiding in cardboard boxes or under beds to sleep, but they come out several times a day to eat, use the litter tray, and interact with people.

What to watch for: A once-social cat suddenly spending most of their time alone in quiet corners could be feeling overwhelmed. If your cat stays hidden all day, refuses to interact, and only comes out late at night to eat – that usually points to a problem.

2、 Over-grooming or chewing

Psychogenic alopecia (stress-related over-grooming) is a real expression of anxiety in cats. Woodgreen cat behaviour expert Samantha Prior notes that over-grooming – particularly when focused on one area – is a self-soothing behaviour in stressed cats.

What to watch for: Bald patches, hair loss, red or irritated skin, or repetitive licking focused on a specific area.

3、Toileting outside the litter box

The RSPCA lists spraying indoors as a typical sign of stress or anxiety in cats. Purina UK also confirms that anxiety symptoms include not using the litter tray or other elimination issues.

Important: If your cat is toileting or spraying outside the litter box, always get them checked by a vet first to rule out urinary issues. Woodgreen specifically warns that male cats in particular must be checked for urinary tract disease first. Only after health issues are ruled out should behaviour be considered.

4、 Changes in appetite

Purina UK lists changes in appetite or weight as a common anxiety sign. Woodgreen also confirms that eating significantly more or less than usual can indicate stress – and sudden appetite loss is worth a vet visit.

5、Increased vocalisation or night-time howling

Both Purina UK and Woodgreen list increased vocalisation (excessive meowing) as an anxiety sign. Night-time howling in particular often signals distress or anxiety.

Important: Night-time howling can also be a sign of cognitive dysfunction (CDS) or hyperthyroidism in older cats. A vet check is recommended to rule these out first.

6、 Aggressive behaviour (towards people or other cats)

The RSPCA notes that cats in pain or fear may show new, unwanted behaviours, including aggression. Woodgreen also confirms that hissing, swatting, or biting at people or other pets they usually tolerate suggests the cat feels threatened or overwhelmed.

7、Body language signals

Petplan notes that anxious cats may show tail tip twitching, dilated pupils, ears turned sideways or backwards – but these can be very subtle, as cats are experts at hiding stress. PDSA lists lowered body posture (crouching low to the ground), a tucked or rapidly swishing tail, and fast ear movements or flattened ears as common signs of fear. The RSPCA lists a tense body posture (such as curling up to sleep or resting with an arched back) as a stress signal.

Common Triggers

Cat anxiety is almost always triggered by changes in their environment or routine. The most common triggers include:

1、Moving house or environmental changes (new home, furniture rearrangement, renovations)

2、New family members (new pet, new baby, new housemate)

3、Outdoor cat threats (neighbourhood cats passing by the window)

4、Multi-cat household conflict

5、Noise fears (fireworks, thunderstorms, construction)

6、Separation from primary caregivers – cat separation anxiety is more common than previously thought

7、Pain or underlying illness

What to Do

1、 See a vet

The first step is always to take your cat to the vet to rule out health issues. Many anxiety symptoms – especially litter tray issues and appetite changes – can be caused by underlying medical conditions. Woodgreen and the RSPCA both agree that health issues must be ruled out before behaviour intervention can begin.

2、 Identify the trigger

If the vet has ruled out health issues, try to identify what has changed in your cat's environment. What's different? A new family member? New furniture? A neighbour's cat? Even something as simple as a new cleaning product?

3、 Observe, don't force

When a cat hides because they're scared, don't drag them out. This increases anxiety. Let them stay in their chosen safe space. They'll come out when they're ready. PDSA recommends giving frightened cats space and time – forcing interaction only makes the fear worse.

4、Ask yourself: "Am I providing the right environment?"

Anxiety is often linked to poor indoor environmental design. The FelineVMA recently published guidelines on indoor cat wellbeing, stating that indoor cats are prone to stress and anxiety if their environment doesn't support these five pillars:

1、Safe spaces (quiet areas to retreat to)

2、Multiple, separate resources (food, water, litter trays, resting areas)

3、Play and hunting opportunities (toys, climbing structures)

4、Positive human-cat interaction (regular, predictable social contact)

Final Thoughts

Cats won't tell you when they're anxious. They'll just hide, groom their fur away, or toilet outside the litter box.

If you notice any of these behaviours, don't assume it's just a "behaviour problem" – rule out health issues first, then adjust their environment to give them a space where they feel safe.

Cats do get anxious. But anxiety is manageable. The first step is recognising the signs.

                                                                                                                                               

References

1、Woodgreen Pets Charity. Ten signs your cat is stressed. 2026.

2、Dutch. Cat anxiety: causes, symptoms, and treatment. 2026.

3、RSPCA. Understanding your cat's behaviour.

4、Purina UK. How to spot and treat cat anxiety. 2026.

5、Spot Pet Insurance. Anxiety in cats: signs, causes, and how to help. 2026.

6、VetPartners UK. Optimising our cats‘ environments. 2025.

7、Petplan. How to calm cat anxiety and stress. 2025.

8、PDSA. How to help a nervous cat.

9、FelineVMA. Meeting the physical and emotional needs of indoor cats. 2025.

10、Cats Protection. Cats and stress. 2026.