Changes

===Epidermis===

===Epidermis===

[[image: Section of Monkey Skin.jpg|thumb|250px|right|Monkey epidermis showing the layers present. Copyright RVC2008]]

[[image: Section of Monkey Skin.jpg|thumb|250px|right|Monkey epidermis showing the layers present. ©RVC2008]]

The epidermis is a stratified squamous epithelium and is composed of 4 cell layers anchored to a basal lamina of connective tissue.  Keratinocytes migrate through the epidermis from the basal layer.  This migration begins in the stratum basale, then moves up through the stratum spinosum, stratum granulosum and the stratum corneum.

The epidermis is a stratified squamous epithelium and is composed of 4 cell layers anchored to a basal lamina of connective tissue.  Keratinocytes migrate through the epidermis from the basal layer.  This migration begins in the stratum basale, then moves up through the stratum spinosum, stratum granulosum and the stratum corneum.

===Footpads===

===Footpads===

[[image: Section of Dog Footpad.jpg|thumb|250px|right|Thickened skin of the canine footpad. Copyright RVC2008]]

[[image: Section of Dog Footpad.jpg|thumb|250px|right|Thickened skin of the canine footpad. ©RVC2008]]

Cats and Dogs have a digitigrade stance with digital, metacarpal and metatarsal pads in contact with the ground.  A carpal pad is also present, but seems to be superfluous.

Cats and Dogs have a digitigrade stance with digital, metacarpal and metatarsal pads in contact with the ground.  A carpal pad is also present, but seems to be superfluous.