By giving your children a pet, you are doing them a bigger favor than you know
I was talking to a child psychologist and he said
allowing your child to grow up with a pet from a young age you are teaching them to love, responsibility, but you are also teaching them, more importantly, how to deal with death.
He said, a child grows very attached to a pet they have a responsibility for. Pets are not supposed to live as long as we do. Most dogs given to a child as a toddler will die when that toddler becomes a teen, based on expectancy. He said, now when that pet dies, you are there to teach them about grief and the importance of remembering, and the importance of death, and the importance of love, etc etc
This is the proper time and the proper way to learn about death, hopefully, before it happens to someone close to them.