A cot comprising: a support frame comprising a front end, and a back end; a pair of front legs slidingly coupled to the support frame, wherein each front leg comprises at least one front wheel; a pair of back legs slidingly coupled to the support frame, wherein each back leg comprises at least one back wheel; a cot actuation system comprising a front actuator that moves the front legs and a back actuator that moves the back legs, wherein the front actuator and the back actuator are adapted to be actuated in tandem or independently; characterised in that the front actuator and/or the back actuator is a dual piggy back hydraulic actuator, wherein the dual piggy back hydraulic actuator comprises a cross member coupled to a first vertical member and a second vertical member wherein: the first vertical member comprises a first hydraulic cylinder (168, 169) comprising a first rod (165, 167) and a second hydraulic cylinder (268, 269) comprising a second rod (265, 267) and the second vertical member comprises a third hydraulic cylinder (168, 169) comprising a third rod (165, 167) and a fourth hydraulic cylinder (268, 269) comprising a fourth rod (265, 267); the first rod (165, 167) and the second rod (265, 267) extend in substantially opposite directions; and the third rod (165, 167) and the fourth rod (265, 267) extend in substantially opposite directions. a support frame comprising a front end, and a back end; a pair of front legs slidingly coupled to the support frame, wherein each front leg comprises at least one front wheel; a pair of back legs slidingly coupled to the support frame, wherein each back leg comprises at least one back wheel; a cot actuation system comprising a front actuator that moves the front legs and a back actuator that moves the back legs, wherein the front actuator and the back actuator are adapted to be actuated in tandem or independently; characterised in that the front actuator and/or the back actuator is a dual piggy back hydraulic actuator, wherein the dual piggy back hydraulic actuator comprises a cross member coupled to a first vertical member and a second vertical member wherein: the first vertical member comprises a first hydraulic cylinder (168, 169) comprising a first rod (165, 167) and a second hydraulic cylinder (268, 269) comprising a second rod (265, 267) and the second vertical member comprises a third hydraulic cylinder (168, 169) comprising a third rod (165, 167) and a fourth hydraulic cylinder (268, 269) comprising a fourth rod (265, 267); the first rod (165, 167) and the second rod (265, 267) extend in substantially opposite directions; and the third rod (165, 167) and the fourth rod (265, 267) extend in substantially opposite directions. the front actuator and the back actuator are adapted to be actuated in tandem or independently; characterised in that the front actuator and/or the back actuator is a dual piggy back hydraulic actuator, wherein the dual piggy back hydraulic actuator comprises a cross member coupled to a first vertical member and a second vertical member wherein: the first vertical member comprises a first hydraulic cylinder (168, 169) comprising a first rod (165, 167) and a second hydraulic cylinder (268, 269) comprising a second rod (265, 267) and the second vertical member comprises a third hydraulic cylinder (168, 169) comprising a third rod (165, 167) and a fourth hydraulic cylinder (268, 269) comprising a fourth rod (265, 267); the first rod (165, 167) and the second rod (265, 267) extend in substantially opposite directions; and the third rod (165, 167) and the fourth rod (265, 267) extend in substantially opposite directions. the first vertical member comprises a first hydraulic cylinder (168, 169) comprising a first rod (165, 167) and a second hydraulic cylinder (268, 269) comprising a second rod (265, 267) and the second vertical member comprises a third hydraulic cylinder (168, 169) comprising a third rod (165, 167) and a fourth hydraulic cylinder (268, 269) comprising a fourth rod (265, 267); the first rod (165, 167) and the second rod (265, 267) extend in substantially opposite directions; and the third rod (165, 167) and the fourth rod (265, 267) extend in substantially opposite directions. the first rod (165, 167) and the second rod (265, 267) extend in substantially opposite directions; and the third rod (165, 167) and the fourth rod (265, 267) extend in substantially opposite directions.