Short answer: Potty training regression usually means something changed, such as more freedom, a trip, a move, her age or her health. Then treat her like a younger puppy again. Add trips, watch closely, and use her pen when you can’t watch.
Check her health first: peeing often, straining, or dripping or bloody urine can signal a urinary tract infection. Call your vet before you retrain.
She was getting it. She sat by the back door, and the rug stayed dry for days. Now there’s a fresh puddle by the couch, and you’re asking what you broke.
Probably nothing. VCA’s veterinary behaviorists say the cause can almost always be found with a little detective work. Emptying a full bladder feels good, so every indoor pee rewards the spot she chose.
Dog potty training regression means a mostly house-trained dog has accidents in the house again. In a young dog, puppy potty training regression often means the habit wasn’t solid yet.
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Why is my puppy regressing in potty training?
In a young puppy, a potty training regression is usually unfinished training, so suspect that first. Then ask what changed in the last week or two.
| What changed | Why it can cause accidents | First move |
|---|---|---|
| She got the run of the house | Freedom came before the habit set | Close doors, use the pen again |
| A trip, a sitter or new hours | Meal times shifted, so potty times did too | Go back to your earlier schedule |
| You moved house | Dogs learn new potty spots fast, wrong ones included | Supervise as if she’s brand new |
| A new pet or visitors | Something new can trigger marking | Supervise, calmly interrupt |
| A new medicine | Some, like prednisone, make dogs drink and pee more | Ask your vet, add trips |
Sources: VCA (house soiling, medicines), AKC (freedom, marking), Humane World (meal times).
How can you tell it’s a regression?
- She was reliable for a stretch, then accidents came back.
- She leaves full puddles. Small amounts on furniture point to marking.
- She pees without straining, crying or dribbling.
- Her bed is dry. Wet spots where she slept suggest leaking.
- She isn’t drinking far more than usual.
A story from Michael Northcutt, our founder: We were gone for four days. When we came back, it felt like our puppy had never seen our house before. She’d stayed with a sitter who loved her to pieces. But that first night home, she had two accidents and woke us up at 3 a.m.
I stood in the kitchen at dawn, mopping, thinking, “Did we just lose a month?” While we were away, her schedule got a little loose. Different house rules, different meal times, more treats, probably. She wasn’t being bad. She was off her rhythm.
So I pulled our original fridge schedule back up, the early one with lots of potty trips. Same meal times, same naps, same bedtime. For about a week, we acted like she was a little younger than she really was.
Every potty trip went on the log. Every outdoor success got a treat. When I couldn’t watch her, she was in her pen with a chew. Within a few days, her rhythm came back. The log showed fewer accidents each day. By the end of the week, it was like we’d never left.
Now, before any trip, I print a “coming home” card for the counter. Old schedule, extra trips, early bedtime, and be patient.
If no trip explains your slip, check her age next.
At what age do puppies regress in potty training?
Slips can come at any age. Two stretches come up most.
- 4 to 5 months, while training is finishing. House training typically takes 4 to 6 months. She looks trained, so owners often expand access to the home too quickly.
- From about 6 months, adolescence. Most behavior experts call dogs adolescents at around 5 to 6 months. Trainer Pat Miller doesn’t call a dog fully housetrained until at least a year old. Marking often starts around now too, per the AKC. Debby McMullen calls a slip around 7 months of age normal.
So a slip between 6 and 7 months is common.
“This truly is the easiest issue to resolve.”
Debby McMullen, CDBC, certified dog behavior consultant, on potty regressions in Whole Dog Journal
How to fix potty training regression: the one-week reset
Restart training as though she were a young puppy, as VCA’s behaviorists advise for healthy dogs. Most puppies sleep about seven hours at night, so one trip every two hours fills the rest with eight or nine. Then add the trips after meals, naps and play. Michael’s puppy needed about a week.
- Rule out her health. If any vet sign fits, call first.
- Shrink her world again. Pen or crate when you can’t watch. Otherwise keep her close, tethered on a 6-foot leash.
- To undo a potty training regression, go back to the earlier schedule. Out at least every two hours, plus after waking, playing, eating and drinking.
- Same door, spot and leash every trip. Wait until she’s completely finished, then praise her right there.
- Clean every spot with an enzyme cleaner. Dogs return to spots that still smell like accidents. Our enzyme cleaner for dog urine guide covers how.
- Write each accident down. A log of pees, poops and meals can show a pattern.
- Hand freedom back slowly. One room at a time, once floors stay dry.
What should day one of the reset look like?
Tip: Back from boarding? Ask the sitter when she ate and went out. Log those times on day one.
4 months old
5 months old
6 months old
Source: normal stretch is about 1 hour per month of age (AKC). Outer limit is months plus one hour (AKC, Humane World). Humane World’s rule is a trip at least every two hours.
Michael knew the reset was working because the log showed it. That log is the part of the kit that fits any age.
Crate training regression: why is she peeing in her crate again?
Most puppies avoid peeing where they sleep, so a wet crate is a clue.
- She’s crated longer than she can hold it. For a 4-month-old, 5 hours is her maximum. Sleep 8 hours, and she’ll likely pee in the crate.
- The crate is too big. If she can pee in one corner and rest in another, add a divider.
At night, keep the crate in your bedroom. Lift the water bowl about two and a half hours before bed. Take her out last thing at night. More in our crate training guide.
Tip: Wet bedding draws her back to the same corner. Wash it and enzyme-clean the crate floor before she sleeps there again.
Our puppy potty training schedule lists trip times by age. The full method lives in how to potty train a puppy.
Not sure when her next trip is due? Our free Potty Break Timer takes her age and last trip and shows the next one. It can also set a phone reminder.
Is it a UTI, a spay issue or a potty training slip?
VCA’s vets call a break in house training a red flag for a bladder problem. Young puppies and females are also more likely to get UTIs. Signs of a urinary tract infection include:
- Trying to pee often, every time she goes out
- Straining, or crying or whining while she pees
- Blood in the urine, or dripping urine
- Licking her genitals a lot, or urine with a very strong odor
Why is she having accidents after a spay or neuter?
Leaking can affect over 20% of all spayed female dogs, mostly middle-aged to senior ones. The tell is pooling under her while she sleeps, and she seems unaware. Retraining won’t fix that, so call your vet. Marking is more common in intact dogs, and neutering may help.
Other illnesses and medicines can also make dogs drink and pee more, which can look like potty training regression. Call your vet if accidents started suddenly, or a steady routine isn’t fixing them. Bring your log.
Once her health checks out, she needs a plan built for her age.
Potty training regression FAQ
How long does a potty training regression last?
There’s no set timeline. Michael’s puppy was back on track in about a week. Teens can wobble until about a year old. If a steady routine isn’t fixing it, call your vet.
Is she doing it on purpose?
No. That “guilty look” most likely means she’s worried. Excitement or submissive urination isn’t deliberate either, and it’s most common in very young dogs. Never punish accidents. It only makes puppies fearful and slows progress.
She’s pooping inside too. Is the fix the same?
Mostly, yes. Take her out after meals and naps, and log every poop. Diarrhea brings urgency, so call your vet if her stool changes. Here’s how often a puppy poops and how soon after eating.
My adult dog suddenly has accidents. Is that regression too?
It can be, but see your vet first, since a sudden start can mean illness. If she’s healthy, retrain her like a puppy.
How we made this guide: In October 2026 we read vet-written VCA pages and three AKC pages. We also read two Humane World guides, two Whole Dog Journal articles, the pages ranking for regression, and owners’ questions. Nobody at LoveMyPuppy is a veterinarian.
Sources
- VCA Animal Hospitals: Dog Behavior Problems, House Soiling, by veterinary behaviorists Ellen Lindell, Debra Horwitz and Gary Landsberg (DACVB), plus Urinary Tract Infections in Dogs and Urinary Incontinence in Dogs
- American Kennel Club: How to Potty Train Your Puppy, by Mara Bovsun, with Mary Burch, PhD, plus Dog Pees in Crate and How to Stop a Dog from Marking
- Humane World for Animals: How to Potty Train Your Dog or Puppy, plus its Crate Training 101
- Whole Dog Journal: How To Potty Train an Older Dog, by Debby McMullen, CDBC
- Whole Dog Journal: Angst With Your Adolescent Dog, by Pat Miller, CBCC-KA, CPDT-KA