They will be exposed to dinos because it is pervasive in children's culture (TV, toys, clothing) and education (preschool, elementary, museums, science centers,

They will be exposed to dinos because it is pervasive in children's culture (TV, toys, clothing) and education (preschool, elementary, museums, science centers, books). If they like it is up to them. You can't push it. If they aren't interested at some point in time, they may be latter.