When a toddler asks you a question, either it comes out of curiosity or it could be just attention seeking. Whatever is the case, it is always best to feed your child's curiosity and give them undivided attention.
Even your child is aware that hitting is not the right thing. You just need to pin point the problem and solve it.
A regular habit or not, thumb sucking can cause problems in a child's speech.
Children do not understand the concept of "stealing" so instead of dealing with this situation using your anger, it is better to sit with your child and make him/her understand why they should not be doing this.
A child is entitled to his/her choices of choosing friends and playmates.
It's normal for kids to get cranky but as a parent do not lose the cool.
Every child needs full attention of a parent. So, pause and reflect on your parenting to make sure none of your children feel left out.
Sibling rivalry is an age-old problem and get can be addressed easily if done at the right time.
Intolerance is not the same as possessiveness. It might have underlying reasons.