Abnormal condition of no urine production:

Transparent, clear gel that fills the space between the lens and the retina of the eye:

Soft tissue surrounding the border of the fingernail or toenail:

Oil-producing gland in the skin:

Lower layer of the skin composed of fatty tissue:

Thin layer of dead tissue at the base of the nail plate:

Thin protective membrane over the front of the eye and attached to the eyelid:

Thin layer of dead tissue at the base of the nail plate:

Black center of the eye through which light enters:

Which essential oil is used for its antibacterial properties in humans, but has been found to be toxic to dogs and cats?