Sumida Kathleen Devlin Biology 342 Locomotion High Speed Gaits in Mammalian Carnivores ROTARY GALLOP In fourlegged mammals the highest speed gait is the gallop It is a fourbeat gait with each limb contacting ID: 292677
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Stuart S. Sumida / Kathleen DevlinBiology 342Locomotion: High Speed Gaits in Mammalian CarnivoresSlide2
ROTARY GALLOP
In four-legged mammals, the highest speed gait is the gallop. It is a four-beat gait, with each limb contacting
independent
of the other three.
In
carnivores,
the gallop usually has
a double suspension
, or floating phase, with the limbs gathered underneath
in one,
and
extended
forward and
back in the other.
The footfall sequence tends to be: right hind, left hind,
left
front,
right
front. (Or left hind, right hind,
right front
,
left front
.) Slide3Slide4Slide5Slide6
GALLOP
In carnivores, the gallop usually has a double suspension, or a floating phase with the limbs both gathered underneath as well as extended forward and back.
The footfall sequence tends to be: right hind, left hind, left, front, right front. (Or left hind, right hind, right front, left front.)
extended
suspension
gathered
suspensionSlide7Slide8
GALLOP -
In lightly built (usually carnivores) mammals such as dogs, the gallop is a four-beat gait.
In the example below: rotatory gallop - right hind, left hind, (extended suspension), left front, right front, (gathered suspension).Slide9
GALLOP compared to a TROT
Note that in a trot, the fore- and hind limbs appear as complimentary angles.
Whereas in a gallop, the forelimbs are almost
PARALLEL to the ground
at some point.Slide10
GallopSlide11Slide12
At pushoff, the hind limb is almost straight.Slide13
GALLOP -
In lightly built (usually carnivores) mammals such as dogs, the gallop is a four-beat gait.
Although both of them show flexibility of backbone, flexibility is greater in cat.Slide14
Cats often have greater duty-factor than dogs while running.Slide15
Cat scapula will show prominently, especially when weight is placed on the forelimb. This happens in all gaits, but is particularly prominent when galloping.Slide16
Cat hips will bend somewhat relative to the vertebral column, whereas those of a dog will not.Slide17
Recall that both cats and dogs have elongate hands (
“
digitigrade
”
condition).
Note that when galloping, the more flexible cat can place the entire hand on the substrate whereas only the digits make contact in dogs.Slide18
Heavy Carnivores:Bears have a moderately flexible back, but not so much as a high speed carnivore.Slide19
Bear in [slow] rotary gallopSlide20
LH
LF
RF
RH
LH
LH
RH
RH
LF
LF
RF
RF
LH
Equine Transverse Gallop with
GATHERED
floating phase.Slide21