A collar for pets includes an adjustment belt and a neck belt wherein the adjustment
belt has a plurality of engagement holes equidistantly distributed at the surface
of one side thereon, and the neck belt is provided with an engaging hoop attached
at one side thereto. At the other side of the adjustment belt and the neck belt
are respectively disposed a first and a second coupling hoops with a first and
a second movable coupling belts attached at the other side of the coupling hoops
thereof. The first/second movable coupling belts are respectively provided with
a D-shaped first/second leash hoops at the outer side of the other end thereof,
and a first/second passages disposed at the middle section thereon for holding
a male and female buckle pieces with elastic buckling legs and buckling holes disposed
thereon respectively. Thus, the collar thereof is adjustably looped around the
neck of a pet with the D-shaped first/second leash hoops guarded at the front outer
side of the male and female buckle pieces before the leash hoops thereof hitched
to a hook of a leash to form two layers of retaining points for double buckling
safety. In case the male and female buckle pieces are mutually disengaged due to
the joggling or nuzzling of the pet, the hook of the leash can still hitch precisely
onto the D-shaped leash hoops of the collar, effectively preventing the pet from
running off instantly from the collar and getting lost.