See every walk.
Morning walkMilo · Your everyday, together
1.8 miles42 min
1.8 mi
1,740 ftStamina · best 6 minutes
An illustrative walk with Milo.
Every route, minute, and mile. Saved in one beautiful record.
The home screen of your dog’s life.
MiloGolden Retriever · 8 years
FamilyFriendsFollowers
A good day, together
73min
3.2 miDistance
2Walks
1Poops
Maya walked Milo
12:46 PM · 31 min · 1.4 mi
You walked Milo
8:12 AM · 42 min · 1.8 mi
Alex logged a potty break
7:18 AM · Ideal
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Unleash Happiness
Their everyday, together
One good day.
All in one place.
Track walks, poop, and everyday care. Together.
1.8 milesTheir sniff time.
Tracked.
See where they pause—and how long they stay. Automatically recorded on every walk.
See study
Sniffing works their brain. In a 2019 study, dogs given time to sniff showed a more optimistic outlook. Duranton & Horowitz, 2019 ↗
14:38 Sniff time
14:38Sniff time
3Sniff stops
Morning walk42 min · 1.8 miles
Spot changes
faster.
Poop quality is a daily check-in for gut health.
MiloWalksDaily dropsBack to ideal
Rough Mon–Sat · back to ideal
Sunday · Ideal
One screen. The whole family.
MiloGolden Retriever · 8 years
FamilyFriendsFollowers
A good day, together
73min
3.2 miDistance
2Walks
1Poops
Maya walked Milo
12:46 PM · 31 min · 1.4 mi
You walked Milo
8:12 AM · 42 min · 1.8 mi
Alex logged a potty break
7:18 AM · Ideal
Yesterday
You walked Milo
6:41 PM · 31 min · 1.4 mi
Get to know
their normal.
See the patterns in their activity, stamina, and everyday routine.
Milo’s trendsMilo · Your everyday, together
1.8miToday
Walks
789101112131415Now
15minToday
Minutes spent sniffing
789101112131415Now
1,740ftToday
Range during the fastest 6 minutes
789101112131415Now
Health Age
Everyday moments.
One bigger picture.
An experimental age estimate from walking activity and stamina.
Tap any toe bean to explore
Tap any
toe bean to explore
Poops
64%consistency
7 logs · last 7 days
M Hard
T Ideal
W Firm
T Ideal
F Soft
S Soft
S Ideal
Most of Milo’s logs stayed close to the Ideal line this week.
About this score
Why it matters
Repeated stool observations can help you notice digestive changes and describe the pattern clearly to your vet.
How it’s calculated
Each poop earns 100% on the Ideal line, 50% one lane away (Firm or Soft), and 0% two lanes away (Hard or Wet). The bean is the average of those credits—not the percentage of ideal poops.
Evidence
Sniffari
Beta209min
Deep sniff minutes · last 7 days
0 minLatest 500 Tails dog-days55 min
Milo averaged 30 deep-sniff minutes on recorded days this week.
About this score
Why it matters
Nosework gives dogs opportunities to explore and make choices. A change can also reflect the route or the time available.
How it’s calculated
Tails totals pauses that the walk’s motion data reads as sniffing, capped at 30 seconds per pause. The headline is Milo’s seven-day total; the marker averages his measured days and the dots show the latest 500 recorded Tails dog-days.
Evidence
Stamina
72ndpercentile
Best six-minute distance · last 7 days
934 ftLatest 500 Tails walks2,300 ft+
Milo’s 1,715-foot reading sits around the 72nd percentile.
About this score
Why it matters
The best sustained six minutes offers one consistent way to follow changes in walking capacity over time.
How it’s calculated
Tails averages the best six-minute distance from eligible walks, then ranks that weekly reading among eligible dogs. The percentile counts dogs below Milo plus half of tied dogs.
Evidence
Minutes
98thpercentile
Walking minutes · last 7 days
0 minLatest 500 Tails dog-days180 min+
Milo’s 106-minute day sits around the 98th percentile.
About this score
Why it matters
Walking time gives useful context for the amount of recorded activity, but duration alone does not describe intensity or suitability.
How it’s calculated
Tails totals recorded walking minutes over seven days and ranks that weekly total among eligible dogs. The percentile counts dogs below Milo plus half of tied dogs.
Evidence
Consistency
11of 14 walks
Completed walks · last 7 days
2 a day
M
T
W
T
F
S
S
Three more walks fills the bean; two days already reached three walks.
About this score
Why it matters
Regular walks create opportunities for movement and time together. The right routine still depends on the dog and the length and intensity of each walk.
How it’s calculated
Completed walks over seven days are divided by the 14-walk planning goal and capped at 100%. Two walks a day is a Tails routine goal, not a prescribed amount of exercise or a separate age bonus.
Evidence
- Health Age Experimental
- 7.5 years
- Actual age
- 8.0 years
Minutes and stamina over time. Not biological age. The other beans do not feed this number.
Our mission
Discover the routine that adds 1,000 days to every dog. Discover the routine that adds 1,000 days to every dog.
What research tells us about everyday care.
Explore the studies behind Tails. Associations and small trials, not proof. Health Age stays experimental.
- Minutes
Activity and cognitive aging
11,574 older dogs · Dog Aging Project
Higher owner-reported activity was associated with fewer signs of cognitive dysfunction. Observational, so it cannot show which caused which.
Bray et al., 2023 - Minutes
How activity changes with age
28,562 dogs · collar activity
Collar-measured activity varied with age, breed size and environment. Its age pattern is the external foundation for the experimental activity-age estimate.
O’Rourke et al., 2025 - Healthy weight
Exercise during weight loss
Weight-loss study · diet vs diet plus exercise
Dogs receiving supervised exercise preserved lean body mass better than dogs on diet alone. Small and nonrandomized, so an inspiration rather than a rule.
Vitger et al., 2016 - Healthy weight
Lean body condition and lifespan
48 Labrador retrievers · lifetime diet study
Dogs fed 25% less stayed leaner and lived a median 1.8 years longer (13.0 vs 11.2). A diet study, not an exercise trial; walking is one way to help a dog stay lean.
Kealy et al., 2002 - Stamina
Endurance in older dogs
80 older Golden and Labrador retrievers
Low clinic-measured endurance was associated with higher mortality. This inspires Stamina as a functional-capacity signal; it does not supply an age conversion.
Lemaréchal et al., 2023 - Stamina
What a six-minute walk can show
69 healthy dogs · six-minute walk
Healthy dogs walked farther in six minutes than dogs with pulmonary disease. Tails measures the best six minutes of everyday walks, a field reading rather than a clinical test.
Swimmer & Rozanski, 2011 - Stamina
Walking speed and cognition
95 dogs · gait and cognition
Off-leash speed was associated with age and cognition in senior dogs, while on-leash speed was not. A field stamina reading needs its own age reference.
Mondino et al., 2023 - Sniffari
Nosework and optimism
20 dogs · two weeks of nosework
Dogs showed more optimistic responses after two weeks of nosework. This supports scent-based enrichment, not a weekly sniffing target.
Duranton & Horowitz, 2019 - Sniffari
Sniffing on and off the leash
286 dogs · three UK parks
Dogs sniffed a median 16% of the time off leash and 4% on it. It measured sniffing, not health, so it shows how much a leash shapes the number.
Westgarth et al., 2010 - Poops
Making stool scores consistent
126 dogs · stool scoring
Owners and veterinarians showed only fair agreement when scoring stools. A consistent chart and repeated logs help describe changes.
Cavett et al., 2021 - Poops
Diet and stool quality
5,789 observations from 361 dogs
Nutrient digestibility was linked with stool moisture and firmness. Diet can change stool quality, so Tails compares recent patterns with the dog’s earlier ones.
Jackson et al., 2024 - Poops
The gut microbiome and aging
922 dogs · Dog Aging Project
Stool DNA showed age-related microbiome patterns. It motivates studying digestive aging; it does not provide a poop-score-to-age conversion.
Bamberger et al., 2026 - Consistency
Activity plans for individual dogs
Nutrition and weight management guidelines
Walking belongs in activity plans tailored to the individual dog. Two walks a day is a Tails planning goal, not a proven threshold.
AAHA, 2021 - Consistency
Building a walking routine
Eight-week veterinary walking program
A structured walking program increased activity in previously inactive dogs and their owners.
Duncan et al., 2020
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Make
every walk
an adventure.
Same best friend.
Something new around every corner.
Every walk reveals more of your map.
Discover new streets and sniffs together.
Create your Pack.Walk together.
Share a walk. Your friends race your recorded time on their own streets.
Share
Your walks become shareable routes
Pick one to set the pace.
Invite
Invite your friends
Send a link. Your route lands on their map.
Race
Fastest walk wins.
The fastest time becomes the Ghost—the replay to beat.
Milo Their whole lifein your hand.
The walks, the people,
and all the little things.
Unleash Happiness
for pets & their people
MiloGolden Retriever · 8 years
FamilyFriendsFollowers
A good day, together
73min
3.2 miDistance
2Walks
1Poops
Maya walked Milo
12:46 PM · 31 min · 1.4 mi
You walked Milo
8:12 AM · 42 min · 1.8 mi
Alex logged a potty break
7:18 AM · Ideal
Good to know
A few little
questions.
Just your phone.
And your favorite walking partner.
Is it really free?
Yes. Walk maps, sniff and poop tracking, goals, and family sharing are free on iOS and Android. Unleashed+ is the optional premium plan.
Is this veterinary advice?
No. Tails surfaces patterns across walks, gut, and stamina so you can ask your vet better questions. It never diagnoses.
Do I need a collar or watch?
No. Tails uses the phone you already carry. There is nothing to charge, fit, or lose.
What if three people walk my dog?
Everyone contributes to one shared record. Every walk, potty break, and goal lands there, so the routine holds even when the walker changes.
Why should I log poop?
Stool shape is an early, honest signal of gut change. One tap per walk keeps the pattern current next to activity and pace.