At the time of writing this guide, there are 5 classifications of pets in Adopt Me!. They break down into Common, Uncommon, Rare, Ultra-Rare, and Legendary. Each pet goes through 6 unique stages of development. These “growth stages” are as follows; Newborn, Junior, Pre-Teen, Teen, Post-Teen, Full Grown.
Neon pets have their own unique stages of growth that they go through. Starting with Reborn (Newborn equivalent), Twinkle, Sparkle, Flare, Sunshine, and ending at Luminous (Full Grown equivalent).
Higher rarities mean that you will have to complete more tasks to help your pet reach the next level. Because you must complete fewer tasks for each stage, leveling up a common pet will take much faster than leveling up Legendary pets. Below is a list listing the number of tasks you need to complete for each growth stage and classification.