Sometimes, there is the definite article "as" before phrases like "minhas gatas" and other times, like now, there is just the possessive pronoun "minhas." In which cases is is necessary to include the definite article, and which cases is it incorrect to include the definite article?
Plural: Minhas gatas (both words are pluralized by adding "s"). Singular: Minha gata. In english: Plural: My cats. Singular: My cat.
PS. "Gata" refers to a female cat and "gato" to a male cat. So, the pronoun follows the substantive's gender. "Minha" for "gata" and "meu" for "gato".