noun ending in o a
noun ending in consonant + a
As we mentioned in previous chapters, Spanish is characterized for having a gender of noun. For these exceptions we must remember that the masculine definite articles are "el" (singular) and "los" (plural). The feminine definite articles are "la" (singular) and "las" (plural). Sometimes the usage of the definite article in Spanish grammar is the same as the usage of the in English, but not always! The following list outlines when to use the definite article in Spanish to refer to titles that make a noun masculine or feminine.
El perro y la perra
The [male] dog and the [female] dog
El gato y la gata
The [male] cat and the [female] cat