It’s 2 a.m. on the first night, and the crying hasn’t stopped in twenty minutes. You’re lying there with your phone lit up, typing “is it normal for a puppy to cry the first night” into Google. Twelve hours ago this puppy was asleep in a pile of littermates. Now he’s alone in a crate in a house that smells like nothing he’s ever known.
That gap is the whole story. Almost everything that feels alarming about those first nights makes sense once you see it from his side.
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Is the Crying Normal?
For most puppies, yes. Whining and crying in the first few nights is a normal part of adjusting to a new home, not a sign you’re doing anything wrong. Some cry for just a few nights, according to the AKC.
Others take longer. Improvement is often not a straight line, and a better night followed by a worse one is not a setback.
What’s not normal is a puppy who’s also vomiting, has diarrhea, isn’t eating, or seems unusually sleepy. Call your vet today for those. Go right away if he’s squinting, blinking a lot, pawing at his eyes, or has eye discharge, or if he’s a tiny puppy who turns very sluggish or wobbly. More on that further down.
Why the First Nights Are So Hard
Being alone is new for a young puppy, and hard. Until he came home, he was hardly ever alone. The warmth, smell and bodies of his mother and littermates were the backdrop of every nap and every night. Then that backdrop disappears all at once, during his first three months or so. The American Veterinary Society of Animal Behavior calls that window the most important time for socialization: it’s when a puppy is busiest learning what counts as safe.
It’s a bit like a kid’s first sleepover away from home, minus the part where he can remind himself it’ll be over by morning. He doesn’t have that context yet. He just has the sudden absence of everything that used to mean safety.
The first weeks aren’t just a cute phase. A 2015 survey of more than 3,000 Finnish dogs found that the dogs described by their owners as fearful had, on average, been less socialized as puppies and had received poorer care from their mothers (Tiira & Lohi, 2015). It shows a link, not that one caused the other.
What Helps Right Now
A few things help, starting tonight.
Keep the crate close. A crate in your bedroom, not a laundry room down the hall, means the puppy can hear and smell you. That takes the edge off being alone for the first time, and it’s what the AKC and Humane World for Animals both suggest for a new puppy.
Make potty breaks boring. If he cries and you suspect he needs to go out, take him out quietly, skip the play and the long cuddle, and put him back. Save the warmth and the fun for daytime. Otherwise you’re teaching him that crying at 2 a.m. gets a party.
Go gradual on the crate, not all at once. Humane World for Animals lays it out in small steps: let him walk in on his own, feed his meals in it, then close the door for short stretches while you’re home, adding time only while he stays calm. If he starts whining to be let out, you may have added time too quickly. Shutting the door on a puppy who has never been in a crate and walking away skips all of that, and it can turn the crate itself into the thing he’s afraid of.
Don’t underestimate sleep and structure. A 2024 study following puppies from the UK’s Generation Pup project found that puppies who slept shut in a crate or a room overnight, and got at least 9 hours of sleep a night before 16 weeks old, were less likely to show separation-related behavior at six months (Dale et al., 2024). That’s encouraging for the boring basics, a set place to sleep and enough of it, though it’s one study of 145 puppies that looked for links rather than testing a plan.
How we evaluate the evidence
Tools That Mimic What He’s Missing
Two things are aimed at the same gap this whole article is about: the sudden loss of his mother and littermates.
ThunderEase Calming Collar uses the ADAPTIL pheromone analog, a synthetic version of the calming pheromone a mother dog produces while nursing. It comes in a small and a large size, and each collar lasts up to 30 days.
For puppies, the most direct evidence is one placebo-controlled trial, run in part by the scientist who created ADAPTIL. Puppies newly adopted from a pet shop wore a collar with the same pheromone, showed fewer signs of distress over their first two weeks at home, and stopped crying at night sooner (Gaultier et al., 2008). We found no trial of the ThunderEase collar itself. On our scale, one trial like this is moderate evidence for puppies.
In dogs over six months old the evidence is weak, and what effect there is shows up mainly while the pheromone is in use (Wong & Govendir, 2021). It’s a small nudge toward “this feels familiar,” not a sedative, and not a fix for anything in the vet box below.
Take this collar, and any other collar, off before he goes into the crate. Tags or buckles can get stuck in the crate wires, which is why PAWS Chicago advises removing a dog’s collar before leaving him alone in one. That makes it a daytime tool for the hours he’s out with you. The puppies in the Gaultier trial wore theirs at night too, so don’t count on it for the crying at night.
The second idea costs nothing. The AKC suggests bringing home a blanket or stuffed toy that smells like his mother and keeping it in his crate. It’s simple advice, not a studied treatment.
For other non-pheromone options with evidence behind them, useful if your puppy’s anxiety doesn’t fully resolve with the two ideas above, the natural remedies guide breaks down what holds up across the wider anxiety spectrum.
If the crying keeps going past two or three weeks, or shows up any time you leave the house (not just at night), that looks more like separation anxiety than first-night adjustment. The separation anxiety guide covers how that’s diagnosed, and if you’re trying to figure out whether specific symptoms count, our guide to dog anxiety symptoms when left alone walks through that distinction in more detail.
When It’s More Than Adjustment
Crying that eases night by night, in a puppy who’s eating, playing, and pottying normally, is most likely adjustment. A few signs point somewhere else entirely.
A new puppy should also see a vet for a general check-up in the first few days at home regardless of how the nights are going. If the crying isn’t easing after two to three weeks of a consistent routine, or is getting worse instead of better, call your vet. Some puppies are more prone to separation problems than others, and a vet or trainer can help you spot that early. For a broader look at how anxiety shows up across ages and triggers, Signs of Anxiety in Dogs is a useful next read.
For related approaches, see How to Help a Dog with Separation Anxiety.
Common questions
How long will my puppy cry at night?
In one trial of puppies newly adopted from a pet shop, every puppy that wore a placebo collar and slept alone cried on its first night (Gaultier et al., 2008). Some puppies sleep through from the start and others cry for a few nights, according to the American Kennel Club. If the crying isn’t easing after two to three weeks of a steady routine, or it’s getting worse, call your vet.
Should I ignore my puppy when he cries in the crate?
A puppy who cries in his crate at night may need the bathroom, so the AKC suggests a quick, quiet potty trip and then back in the crate. If he has just been out and you’re sure he doesn’t need to go, Humane World for Animals advises waiting the whining out rather than letting him out, and never punishing it. You can also keep the crate right next to your bed and put a hand inside to reassure him.
Will my puppy need to go out during the night?
Some young puppies need a trip outside in the middle of the night, and the AKC says this usually ends by about 4 to 5 months of age. Keep those trips short and boring: out, potty, straight back to the crate.
How long can a young puppy stay in a crate?
Puppies under six months shouldn’t stay in a crate for more than three or four hours at a time, according to Humane World for Animals, because they can’t hold their bladder or bowels that long. At night, keep the crate in your bedroom so you’ll hear him, and take him out when he wakes and needs to go.
When should a new puppy see the vet?
A new puppy should have a vet check-up within the first few days at home, whatever the nights are like (AKC). Don’t wait for that appointment if he’s vomiting, has diarrhea, isn’t eating, or seems unusually sleepy: call your vet that day. For squinting or eye discharge, or a tiny puppy who turns very sluggish or wobbly, go right away, as the AKC advises for eye trouble.
Sources
- Tiira K & Lohi H — Early life experiences and exercise associate with canine anxieties (PLoS ONE, 2015)
- Dale FC, Burn CC, Murray J, Casey R — Canine separation-related behaviour at six months of age: early-life risk factors from the ‘Generation Pup’ study (Animal Welfare, 2024)
- Humane World for Animals — How to Crate Train Your Dog or Puppy
- AKC — Your First Day at Home With a New Puppy
- AKC — How to Spot a Sick Puppy: Illness Warning Signs
- AKC — Hypoglycemia in Dogs: Signs, Symptoms, and Treatment
- Gaultier E et al. — Efficacy of dog-appeasing pheromone in reducing stress associated with social isolation in newly adopted puppies (Veterinary Record, 2008)
- Wong CF & Govendir M — Can dog appeasing pheromone ameliorate stress behaviours associated with anxiety in mature domestic dogs? (Veterinary Evidence, 2021)
- AVSAB — Position Statement on Puppy Socialization
- PAWS Chicago — Crate Training
These first nights do end. For the fear that doesn’t fade with age, see our guide to dog anxiety.