Abstract: A toy vehicle includes a supporting chassis having a plurality of rolling wheels secured thereto. The chassis supports an audio circuit, a battery and an audio transducer together with a pair of switch contacts configured to provide a growling sound when the switch contacts touch. The chassis further supports an articulated body having a cab portion and rear portion resembling a standard truck joined in a pivotal attachment. A shaft and cam mechanism is coupled to a movable arm in a cooperative arrangement in which pivotal motion of the movable arm closes the switch contacts activating the audio circuit and raising the cab and rear portion of the truck body to bear sets of hidden teeth at the front of the toy vehicle.

Abstract: A toy vehicle having a base portion; a top portion; and a mechanical arrangement linking the base portion to the top portion for causing the top portion to move to a number of different positions with respect to the base portion, the aforementioned arrangement including a pair of pivoting axles, receptacles for pivotably fixing the axles at selected positions adjacent the base portion, a pair of arms extending from each of the axles, each of the arms having an end, and an arrangement pivotably fixing the ends of the arms extending from each axle to pivot at selected positions adjacent the top portion.