Petz grow slightly each real-time day if the game is opened. The pet will have a puppy bark or kitten meow, be slightly clumsier, and appear smaller in size when compared to its adult counterpart. A pet adopted from the Adoption Center is adopted as a puppy or kitten (age 12 on the PetzA brainsliders). Raising a pet to its adult age unlocks new interactions. In the Petz series, the player gets to watch their pet grow up into an adult. Not everything found in the Petz 5 game can be added to the Carrying Case, but a majority of it can. It allows the player to have an unlimited supply of whatever is placed in it, unlike the Carrying Case in previous versions. The Carrying Case in Petz 5 acts like the Toyz Closet. In Petz 5, players must explore playscenes and participate in minigames to earn toyz. In Petz 5, the Clothes Closet is replaced by the Salon and the Toyz Closet has been removed. The rest of the playscenes are different areas for the player to explore with their pet.
Players may place toyz to take with them by placing them in their Carrying Case (by dragging the toyz into the blue shelving units that are enabled or hidden by clicking the arrow button next to the 'Go To' button).
The Toyz Closet has toyz that a player can bring out to better interact and excerise their pet, as well as treatz and a food dish to reward or feed their pet. The Clothes Closet provides the player with clothes that they can place on their pet by clicking and dragging the item onto their pet. All the various playscenes contain different interactions. In Petz 4, players have the choice to visit the Adoption Center, Clothes Closet, Toyz Closet, Backyard, Beach, Family Room, Kitchen, Arabia, Gypsy Circus, Snow Scene, South Seas Island, Wild West, Playpen, Custom Scenes, or the player's very own desktop. Players may now navigate to other Playscenes by clicking the 'Go To' button on their carrying case and selecting a room from the drop down list. Most petz do enjoy getting stroked, but not all petz enjoy being picked up. Petz will respond accordingly to their personality and genes. Players may also interact with their new companion by clicking and holding down their left mouse button to stroke and praise their pet, or click and hold down their right mouse button to pick up their pet. The game becomes less restricive of the player's actions and allows the player to navigate throughout the game and take pictures of their pet either by clicking the Camera button on the Carrying Case or by using the spacebar on their keyboard. After the player agrees by clicking 'Adopt', they will be escorted into the Living Room playscene. The pledge goes through a quick rundown of the responsibilities of owning a pet, the type of care the player must provide to their pet, and the consquences if they fails to meet the pet's needs. After typing the desired name, the player will click 'Okay' and face the Adoption Pledge. Canceling will close the window and take you back to the Adoption Center, whereas clicking 'Proceed' will open a new window in which the player will be able to choose the name of their new companion. The player will have the choice to click 'Proceed' or 'Cancel'.
When clicked, the player will be be prompted with a message explaining the responsibility that comes with owning a pet. In order for the player to unlock more interactions with the pet, they may click the 'Adopt Now' button on the house. The player may now play with the pet with limited actions (as you may not take pictures or take your pet anywhere in the game until it is adopted), adopt the pet, or place the pet back into the Adoption Center by right-clicking on the pet and dragging it to the door of the Adoption After selecting the desired breed by clicking its name, said breed will come walking out of the Adoption Center doors as a puppy (age 12 on the PetzA brainsliders). By clicking 'Pick a Pet' on the house, players are faced with a list of Breedz to choose from. At the Adoption Center, like everywhere else in the game, the player uses their mouse to navigate around the screen. The Adoption Center is a yellow house in a garden-type setting.
They will also be brought back here when the game is launched with no adopted petz in it. Petz 3, 4, or 5 is launched, players begin the game at the Adoption Center.