They also speak/understand Portuguese in Uruguay in the border regions with Brasil. Brazilians find it easier to understand Galician than European Portuguese (linguistically, Galician is extremely similar to Portuguese but today is spoken with a Castillian-influenced pronunciation). Also, Brazilian Portuguese is somewhat influenced by Spanish which is a syllable-timed language whereas European Portuguese is a stressed-timed language (just like English). So all this means that Spaniards consider Portuguese to be Spanish spoken by a drunk Russian.
So,in short, most Brazilians don’t speak Spanish?