To greet someone, you say Hola or sometimes Buenos días [Good day], Buenos tardes [Good afternoon], or Buenos noches [Good evening], depending on the time of day.
My apartment doesn't allow pets, but my sister has two big dogs, so sometimes we walk them together on the weekends. Some of my friends have dogs, too.
I have traveled to Argentina, Peru, Barcelona [Spain], and the United States. I am fortunate to travel this much. Some travel was for my job, but I also traveled in college.
I am a biology professor at the university here. I teach in la facultad de medicina [the department of medicine], but I sometimes also teach general education courses in biology.
Take opportunities to learn about the world and travel. Science is a good way to understand the world around you, and it is also a good way to connect with people in other places.