A pack of stray dogs stood watch over Margarita Suarez's funeral in Mexico. (Patricia Urrutia/ABC News)A pack of stray dogs stood watch over Margarita Suarez's funeral in Mexico. (Patricia Urrutia/ABC News)A pack of stray dogs stood watch over Margarita Suarez's funeral in Mexico. (Patricia Urrutia/ABC News)A pack of stray dogs stood watch over Margarita Suarez's funeral in Mexico. (Patricia Urrutia/ABC News)A pack of stray dogs stood watch over Margarita Suarez's funeral in Mexico. (Patricia Urrutia/ABC News)Patricia Urrutia and her mother Margarita Suarez in an undated family photo. (Patricia Urrutia/ABC News)A pack of stray dogs stood watch over the funeral of a woman who dedicated her life to helping animals.