Why do cats get the zoomies?
PetMD's veterinary behaviorist Dr. Alison Gerken calls them Frenetic Random Activity Periods — FRAPs — and frames them as energy release: just like people need to move after sitting too long, cats need to discharge stored energy, and indoor cats get fewer chances to do it. The bursts may release endorphins, which is part of why they look so euphoric.
Two more drivers: hunting instinct — sudden sprints and sharp turns mimic chasing prey — and the clock. Cats are crepuscular, most active at dawn and dusk, which is exactly when the midnight Olympics tend to start.
Why does my cat zoom right after the litter box?
That one has a name-worthy trigger. PetMD quotes Dr. Elizabeth Stelow: defecating stimulates the vagus nerve, which can produce a feeling of release and relief — and some cats convert that feeling into a victory lap. The same post-bathroom sprint shows up in dogs, too.
It's a leading theory, not settled science. What matters practically: if the sprint is accompanied by straining, crying, or blood, that's a litter box problem to take to the vet, not a zoomie.
Is it normal? And when should I worry?
Normal, in most cases. PetMD notes kittens and young cats have the most frequent and intense zoomies — the bursts practice agility, coordination and motor control — while older cats zoom less often.
Two exceptions to take seriously:
- New zoomies in a senior cat. A sudden change can signal an overactive thyroid (hyperthyroidism) or mobility problems (PetMD) — worth a vet visit even if it looks like joy.
- Zoomies that don't look like fun. Running as if escaping something, a frightened expression, or urgent vocalizing. Dr. Stelow's tell: zoomies look almost out of control, while ordinary play is more measured.
How to handle midnight zoomies
The PetMD kitten guide gives the playbook, and it starts with mimicking the hunt:
- Let her stalk, chase and catch a toy that moves like prey — then treat the catch as the finale.
- Schedule the session before bed. Tired cats zoom less at 3 a.m.
- Wind down gradually: slowing the toy's movements signals that playtime is ending. Stopping abruptly can backfire — a suddenly still human becomes the only moving target.
- Keep hands and feet out of the game entirely, so the ambush reflex never trains on you.
- Check for triggers: catnip, silvervine, sudden noises, or conflict with another cat can each set off a burst (PetMD).
Frequently asked questions
Why do cats get the zoomies at night?
Cats are crepuscular — most active around dawn and dusk (PetMD) — and indoor cats build up unused energy during the day. A hunt-style play session before bed is the usual fix.
Do kittens get the zoomies more than adult cats?
Yes. PetMD says kittens and young cats have frequent, intense zoomies because of high energy and rapid growth, and the bursts help them practice agility, coordination and motor control. Adult cats still zoom, just less often.
Is my cat in pain when they get the zoomies?
No — sprinting itself isn't a pain sign. The caution from PetMD is the opposite pattern: an older cat who suddenly starts zooming, or a sprint that looks fearful or panicked, deserves a vet visit to check for hyperthyroidism or mobility problems.
Why does my cat run around after pooping?
PetMD's explanation: defecating can stimulate the vagus nerve and produce a feeling of relief that some cats turn into excited running. If you see straining, crying or blood in the litter box, treat it as a medical issue instead.