How to Age Up Pets in The Sims 4: Growing Your Furry Friends

The Sims 4 Cats & Dogs expansion pack brings back cats and dogs, allowing players to customize their pets’ looks and behaviors. Furthermore, it introduces Brindleton Bay – a world featuring coastal towns where your Sims can enjoy various pet-related activities.

Cats and dogs have three life stages; kitten/puppy, adult, and elder. Once your pet reaches senior status, it will only live an additional 6-11 days before succumbing to age-related issues.


Cats and dogs are an exciting new addition to The Sims 4 that will revolutionize your Sims’ lives in unexpected ways. Utilize the Create A Pet feature of The Sims 4 to customize them with unique appearances and behaviors you can explore.

The expansion pack also adds a Vet Clinic business for your Sims to run in Brindleton Bay, an idyllic coastal town. Here, they can care for their pets and even find stray animals in need of adoption.

Running a vet clinic requires essential skills, including research and treating your Sims’ pets on exam tables. Furthermore, your Sims must be willing to handle the stress that comes with being an owner/operator of a vet clinic.

Your Sims’ pet care skillset will also benefit their overall star rating, potentially increasing profits in the long run. Furthermore, they have the option to perform surgery if needed on their pets for added convenience.

Dogs and cats both possess pet traits that influence how they perceive the world around them. For instance, your Sims’ cats might be more inclined to play fetch than other animals in their pack.

These traits can be altered in your pet’s settings, located under the Gaming Traits tab. Each pet can have three distinct personalities; kitten/puppy, adult, and elderly.

Kittens and puppies typically live six to eleven Sim days before they pass away due to old age. Elderly pets will live much longer than when they were kittens/puppies or adults, though only up until a random age.


Maxis’ The Sims 4: Cats & Dogs pack is a revolutionary new expansion that enables players to craft and adopt an array of felines and canines. With its powerful “Create A Pet” tool, players can customize each pet with unique looks, personalities, and, for the first time ever, expressive outfits!

These incredible, lifelong companions will profoundly affect your Sims’ lives. Use the Create A Pet tool to customize perfect cats and dogs, complete their looks with expressive outfits, and nurture new connections as they explore a breathtaking coastal world!

In addition to pets, the pack also features Brindleton Bay – a new coastal town inspired by classic New England seafront towns. It has four neighborhoods and 16 lots in total.

Create A Pet offers plenty of customization options for your furry friends, such as their breed, coat, and age. Plus, you can dress them up for parties and special occasions like their own birthday!

There’s also a brand-new veterinarian occupation in Sims World! Veterinarians can treat animal ailments and even run their own clinics! Before being able to cure them, vets must research various diseases and treatments – but vets will be rewarded with higher ratings as well as the satisfaction of successfully curing your pets!

Pets go through three distinct life stages; kitten/puppy, adult, and elderly. The kitten/puppy stage is similar to that of a real Sim, while the adult and elderly pet lifespans are much shorter.

With age, your pets develop new traits and behaviors. Additionally, they gain a stress bar that displays their current level of strain.


If you’ve been following the development of The Sims 4 for some time now, you may have noticed that EA and Maxix haven’t released many new features yet. But one of the most eagerly anticipated additions to the series is pets – which now feature the ability to age cats and dogs and even build your own veterinary clinic! This can make your Sims feel much more special than they usually are and serve as a springboard into an even richer simplified experience.

Before you dive in, there are a few things you should know first. Most importantly, ensure your new furry friends live long and healthy lives by installing some clever (or naughty) mods. However, be patient as the best pet longevity mods tend to come at an expensive price tag, so do some research before choosing one for your furry pals!


Pets have been available in The Sims 4 since September 2014. Interacting with them brings out positive moodlets, and some pets even assist players with gardening by taking care of bugs on crops. Unfortunately, certain pets are more prone to sickness than others – for instance, cows can get sick if they drink milk; cats and dogs must be kept clean and away from water sources to prevent illness.

With the Cottage Living pack from EA, The Sims 4 now features more traits to foster animal-friendly and rural communities. One trait called Animal Enthusiast gives sims positive moodlets when interacting with Chickens, Llamas, Cows (if they have the Cats & Dogs Expansion Pack), or Wild Birds.

Another new trait is Lactose Intolerant, which makes Sims feel uncomfortable if they consume dairy products. This trait more closely resembles an allergy than a personality trait, but it adds another dimension to creating unique Sims. You can raise cows for milk but also have non-dairy milk made from veggies treats. Furthermore, this mod will enable Sims to get pregnant much more quickly than they normally would; their pregnancy lasts 18 hours total – 6 hours for each trimester.

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