Internal parasites (sometimes known as worms) can limit production and can be complex to manage. Having an animal health plan, developed with a veterinarian, can help minimise the effects of parasites.

• Parasites of the deer stomachs and intestinal tract are known as Gastrointestinal tract parasites.
• Parasites of the airways and lungs (such as Lungworm) are known as Thoracic parasites.