Darlington, MD - At 1607hrs. Whiteford Volunteers were dispatched for engine and truck mutual-aid to Co. 9 (Darlington) first due for a dwelling fire in the 4000blk. of Conowingo Rd. At 1612hrs. Chief 6, T631, & E611 called en-route and was advised caller reporting flames and smoke were visible from the basement. At 1618hrs. E913 & Chief 6 arrived to found heavy smoke to a 1-1/2 story wood frame dwelling. Chief 6 assumed the command and requested a working fire dispatch. Crews found the fire in the basement and conducted an extensive interior attack which extended to the first floor. Crews were able to bring the fire under control at 1719hrs. The fire displaced 9 family member which are being assisted by the Red Cross. Unfortunately, several pets inside had succumb to the fire, Units cleared at 1909hrs.