A dog’s half birthday is six months after its birthday, and for a puppy the first one is the 6-month mark. Owners often celebrate with a walk somewhere new, a pet-safe treat, a new toy and a photo. If you do not know your dog’s birthday, you can celebrate a half “gotcha day” six months after the day you brought them home.
Find the date with the half birthday calculator: enter your pet’s birthday or adoption date.
When is my dog’s half birthday?
| Birthday or gotcha day | Half birthday |
|---|---|
| 10 January | 10 July |
| 14 February | 14 August |
| 31 March | 30 September |
| 31 August | 28 February (29 in a leap year) |
| 25 December | 25 June |
The rule is the same as for people: add six months and keep the same day, or use the last day of the month if that day does not exist. See how we calculate half birthdays.
Celebrating a puppy’s 6-month birthday
Six months is a big moment for a puppy. Ideas:
- A “6 months” photo in the same spot as their first photo at home, to compare sizes.
- A new toy suited to their size and chewing strength.
- A short adventure: a new walking route, a beach or a dog-friendly park.
- A puppy playdate with a dog they already get on with.
- A training milestone: practise a trick they have learned and film it.
Ideas for adult and senior dogs
- Their favourite walk, at their pace.
- A sniff walk: let them lead and explore for as long as they like.
- A new puzzle feeder or snuffle mat for mental exercise.
- A grooming or spa day at home, if your dog enjoys it.
- A photo with a “½” sign each year.
Pet-safe treats
Use treats made for dogs, or a cake from a pet bakery, rather than people food. Many common foods are unsafe for pets, including chocolate, xylitol (a sweetener), grapes and raisins, onions and garlic, and macadamia nuts. See the ASPCA’s list of people foods to avoid feeding your pets, and ask your vet if you are unsure.
Keep birthday decorations, balloons, ribbon and candles out of reach, as pets may chew or swallow them.
Half birthdays for cats and other pets
The same date rule applies to cats, rabbits and other pets. Keep it simple: a favourite treat made for that animal, a new toy and quiet time together. Many pets are happier with a calm day than a party.
Half gotcha day
Rescue pets often have an unknown birthday, so owners celebrate their “gotcha day”, the day the pet came home. Six months after that is a half gotcha day, a nice moment to look back at the first six months together.
Dog half birthday questions
Do people celebrate their dog’s half birthday?
Some owners do, especially for a puppy’s 6-month mark. It is usually a small celebration: a walk, a toy or a treat and a photo.
What can I give my dog on their half birthday?
A new toy, a dog-safe treat or a favourite walk. Avoid people food, and check with your vet about treats if your dog has allergies or a special diet.
How do I work out my dog’s half birthday?
Add six months to their birthday or gotcha day. The half birthday calculator does it for you.
What if I don’t know my dog’s birthday?
Celebrate their gotcha day and half gotcha day instead, or pick a date that suits you.
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Last updated: 14 November 2026.