Just remembered one more thing that I didn't see in the guide.
Toddler Traits:
Angelic - Idyllic, easygoing Toddlers. They are never defiant and they don't throw a tantrum. They can easily talk to strangers.
Charmer - These Toddlers love to socialize. They earn Communication skill faster, and don't suffer Stranger Danger from strangers. They can Share the Love with other Sims.
Clingy - These shy Toddlers avoid Sims outside the household and get sad if left behind. They gain extra skill when taught. And they recover faster from bad moods when Comforted.
Fussy - Tiny trouble-makers who love to Cry, cause trouble, and Throw Fits. But being noticed makes them Happy and helps them overcome negative Moodlets.
Independent - These Toddlers love their freedom, and don't like to take orders from caregivers. They gain extra skill when they are left alone, and need less Attention than other Toddlers.
Inquisitive - Curious explorers. These Toddlers gain Thinking skill slightly faster. They are happiest when learning something, and sad if they haven't learned anything lately.
Silly - Goofy and curious. These Toddlers love to tell jokes and get Playful. They earn Imagination skill slightly faster.
Wild - Spirited and full of Energy. These Toddlers love to explore and get Energized. They earn Movement skill slightly faster. They get Sad if they haven't been outside in a while.