All modal verbs are auxiliary verbs, which means they can only be used with a main verb. Modal verbs cannot be a main verb. They are used to express ideas such as possibility, prediction, speculation, deduction and necessity.
Discover “Los Animales”- Animal names in Spanish. The following infographic is the ideal tool to learn Spanish animal names. It can be used by teachers in classrooms, as a poster in your office, or it teach children the names of animals in Spanish. http://blog.donquijote.org/2013/4/animal-names-in-spanish