Infant and Toddler Quirks
Infants and Toddlers are unique. In addition to traits, each Infant and Toddler start off with a total of three hidden Quirks. These Quirks affect how the Sim will behave during their current age and will be discovered automatically when the affected behavior occurs. Visit the Trait Section of the Simology panel to review these Quirks after they've been discovered.
There are a total of 19 confirmed Quirks for Infants:
Early Riser: This Infant prefers to rise with the sun. Infants with this Quirk are more likely to wake up when the sun comes up
Feeding Tinkler: This Infant often pees while being fed. Infants with this Quirk are more likely to use their diaper during feedings.
Free-Air Tinkler: This Infant often pees during diaper changes. Infants with this Quirk are more sensitive to the air temperature in the room during diaper changes, which results in them peeing frequently during them. Watch out!
Frequently Hiccups: This Infant hiccups all the time. Infants with this Quirk have more gas in their tummy and hiccup more frequently.
Frequently Sneezes: This Infant is always sneezing. Infants with this Quirk clear their little noses of particles and germs more frequently. It's perfectly normal and healthy!
Gassy: This Infant has tummy issues. Infants with this Quirk will be gassier and fussier.
Good Appetite: This Infant loves to eat. Infants with this Quirk will always accept the opportunity to feed, and they'll finish almost any food, regardless of how hungry they are.
Happy Spitter: This Infant is prone to spitting up while they feed. Infants with this Quirk are perfectly normal - their digestive systems are just still maturing.
Hates Bedtime: This infant has trouble going to sleep.
Hates Being Held: This Infant doesn't like to be held. Infants with this Quirk are more likely to get upset when they're picked up and happier to be set down.
Hates Wakeup Time: This Infant rarely wakes up in a good mood. Infants with this Quirk are more likely to behave like grumpy bunnies when they wake up from a nap or sleep.
Little Babbler: This Infant is very talkative. Infants with this Quirk are more likely to coo and babble both to themselves and others.
Loves Being Held: This Infant loves to be held. Infants with this Quirk are more likely to react positively when they're picked up or carried and upset when they're put down.
Loves Sounds: This Infant loves to hear sounds. Infants with this Quirk love to do anything that makes a sound, and they're more likely to wiggle when music is playing nearby.
Loves Wakeup Time: This Infant is often bright and sunny upon awakening. Infants with this Quirk are more likely to be happy when they wake up.
Messy Eater: This Infant is extra messy around food time. Infants with this Quirk are more likely to get food all over themselves and the High Chair.
Picky Eater: This Infant is very particular about food. Infants with this Quirk are more likely to reject feedings unless they're hungry. They also aren't likely to finish their food unless they love it, regardless of how hungry they are.
Self-Soother: This Infant will often try to self-soothe themself. Infants with this Quirk are more likely to place their fingers and toes in their mouths to calm themselves when sad or angry, and especially when crying.
Snuggly Sleeper: This Infant only likes to fall asleep when they're being held. Infants with this Quirk cry when they're put down to sleep while being held or in a back carrier.
https://sims.fandom.com/wiki/Infant/Quirks
https://gamerant.com/the-sims-4-growing-together-infant-quirks-effects/
Toddler Quirks
Aggressive: his Toddler is a little more aggressive than most. Toddlers with this Quirk like to roughhouse and are quick to hit, bite, or kick Sims (so long as they aren't good friends). They don't even have to be angry. Watch out!
Destructive: This Toddler is often destructive. Uh oh! Toddlers with this Quirk often behave like little monsters who take pleasure in the chaos they leave behind in their wake!
Early Riser: This Toddler prefers to rise with the sun. Toddlers with this Quirk are more likely to wake up when the sun comes up.
Good Appetite: This Toddler is always ready for food. Toddlers with this Quirk love to eat, which can make mealtime easier. But be careful! These little ones have been known to eat food off of the floor... even if it's spoiled.
Hates Bedtime: This Toddler hates bedtime and naptime. Toddlers with this Quirk tend to wake up shortly after falling asleep and will often ask their caregiver for various things to avoid sleeping.
Hates Being Carried: This Toddler hates to be carried! Toddlers with this Quirk can manage on their own, thank you very much. Caregivers should be careful picking this toddler up as it will likely put the toddler in a bad mood.
Hates Wakeup Time: This Toddler rarely wakes up in a good mood. Toddlers with this Quirk are more likely to behave like grumpy bunnies when they wake up from a nap or sleep.
Heavy Sleeper: This Toddler is a heavy sleeper. Toddlers with this Quirk won't wake up from surrounding noises, are less likely to wake up from nightmares, and have an easier time getting a good rest.
Light Sleeper: This Toddler is a light sleeper. Toddlers who are light sleepers have a tendency to wake up randomly when sleeping and will need to be put back to sleep if they're still tired.
Little Singer: This Toddler loves to sing. Toddlers with this Quirk enjoy singing and tend to sing at random times throughout the day.
Loves Being Carried: This Toddler loves to be held. Toddlers with this Quirk love to be carried and especially love it when their Caregivers are the ones doing so. They're also more likely to ask to be picked up when they haven't been carried in a while.
Loves Books: This Toddler loves books. Toddlers with this Quirk enjoy playing around bookshelves and are more likely to do book-related activities when able.
Loves Sounds: This Toddler loves anything that makes sounds. Toddlers with this Quirk tend to be fascinated with radios, TVs, and toys that make sounds.
Loves Wakeup Time: This Toddler is often bright and sunny upon awakening. Toddlers with this Quirk are more likely to be happy when they wake up compared to other Toddlers.
Loves Water: This Toddler loves to play in and around water. Toddlers with this Quirk are more likely to do things like splash in toilets, ask to take baths, and seek out other activities involving water.
Messy Eater: This Toddler is a little extra-messy around food time. Toddlers with this Quirk are more likely to cause messes when eating their food.
Picky Eater: This Toddler is very particular about food. Toddlers with this Quirk regularly refuse food that's given to them and will even toss it from time-to-time. What a mess!
Wanderer: This Toddler frequently wanders off. Toddlers with this Quirk are quick to run away after they're put down.
https://sims.fandom.com/wiki/Toddler/Quirks
