Yes, twitching in newborn puppies is completely normal. Those jerky little movements you’re seeing during sleep are a sign of healthy neurological development, not a problem. Newborn puppies spend the vast majority of their time sleeping, and much of that sleep involves visible twitching of the legs, paws, face, and sometimes the whole body. This type of sleep even has a name: activated sleep.
What Activated Sleep Looks Like
Activated sleep is the newborn version of REM sleep, the phase associated with dreaming in older animals. During this phase, you’ll see a sleeping puppy’s legs paddle, their lips quiver, their eyelids flutter, and their tiny muscles twitch and jerk. It can look surprisingly intense, especially in very young puppies who may seem to twitch almost constantly while asleep. The movements are typically brief, loose, and random rather than stiff or rhythmic.
Newborn puppies spend far more time in activated sleep than adult dogs do. In the first couple of weeks of life, a puppy may spend 90% of its time sleeping, with a large portion of that in this twitchy, active phase. As puppies grow, the proportion of REM sleep gradually decreases, which is consistent across mammals. By the time a dog reaches adulthood, REM makes up a much smaller slice of total sleep, though twitching never disappears entirely. In one survey of dogs at 12 months old, 73% of owners still reported seeing small twitching movements in their dog’s legs during sleep.
Why the Twitching Matters for Development
Those twitches aren’t random glitches. They serve a real purpose. Researchers have found that twitching during sleep acts as an internal source of stimulation that helps wire the developing nervous system. Each tiny twitch sends a signal from the limb back to the spinal cord and brain, and this feedback loop helps the puppy’s nervous system map out which muscles are connected to which neural pathways. Think of it as the brain running a self-test, checking and strengthening its own wiring.
In studies on newborn rats (whose early development closely mirrors that of puppies), researchers found that signals triggered by sleep twitches activate specific regions of the brain’s sensory cortex in a precise, topographic pattern. The twitch of a specific paw lights up the corresponding area of the brain. This process helps build the connections between motor output and sensory input that a puppy will eventually need for coordinated, intentional movement like walking, running, and playing.
Twitches also help organize circuits within the spinal cord itself. Researchers describe twitching as a form of “motor exploration” where the developing animal is essentially probing the structural features of its own limbs and learning how they work before it ever tries to use them on purpose. This lays the foundation for the coordinated muscle groups (called motor synergies) needed for goal-directed movement later. The nervous system is, quite literally, actively participating in its own construction.
How Twitching Changes as Puppies Grow
The intensity and frequency of twitching is highest in the first few weeks of life, when brain development is most rapid. During this period, puppies can’t yet see or hear, and their world is almost entirely sleep, nursing, and warmth-seeking. Activated sleep is doing heavy lifting during these early days, helping consolidate the neural connections that will soon support the explosive learning phase ahead.
By around 16 weeks, puppies still sleep more during the day than adult dogs do, averaging about 11.2 hours of total sleep per day compared to roughly 10.8 hours at 12 months. But the quality of that sleep shifts. The proportion of deep, twitchy REM sleep decreases as the brain matures and no longer needs as much self-generated stimulation. You’ll still see twitching during sleep at any age, but it becomes less dramatic and less constant over time. In older puppies, REM sleep also starts to help consolidate learned skills like bite inhibition, basic commands, and household routines.
When Twitching Might Signal a Problem
In rare cases, what looks like twitching could actually be a seizure. The key differences are in how the movements look and how the puppy behaves afterward. Normal sleep twitching involves soft, loose, irregular movements. The puppy’s body stays relaxed, and if you gently wake them, they return to normal immediately.
Seizure activity, by contrast, tends to involve stiff, rigid movements that are more intense and rhythmic. The episodes last longer and may be accompanied by drooling, loss of bladder or bowel control, or vocalizing. After a seizure, a puppy often appears confused, disoriented, or unresponsive for a period. If you’re seeing stiff, prolonged episodes with any of these additional signs, that warrants veterinary attention. But the vast majority of twitching in sleeping newborn puppies is exactly what healthy development looks like.
Should You Wake a Twitching Puppy?
No. Let them sleep. Activated sleep is doing important developmental work, and interrupting it offers no benefit. Puppies who are twitching in their sleep are not in pain or distress. They’re building their brains.
If for some reason you do need to wake a sleeping puppy or dog, use your voice first rather than touching them. Dogs pulled suddenly out of REM sleep can startle and snap reflexively, even gentle ones. This is a normal protective reflex, not aggression. If voice alone doesn’t work, touch them lightly on the body, away from the head. But in almost every case, the best approach is simply to let the twitching run its course. It will stop on its own when the sleep cycle shifts.
For very young puppies, the best thing you can do is provide a warm, quiet sleeping environment where they can nap undisturbed as often as they need to. Short, frequent sleep periods with plenty of twitching are a sign that development is on track.