Woody Tongue
June 2026

Woody Tongue in Cattle: Symptoms, Causes and Treatment

Woody tongue is a relatively common condition seen in cattle across the Waikato. It can present as unexplained weight loss, reduced appetite, and excessive salivation—while animals often remain bright and alert.

Early diagnosis and treatment are key to a quick recovery.

Common Signs of Woody Tongue

Cows with woody tongue may show:

  • Weight loss despite being alert
  • Difficulty eating or chewing
  • Excess salivation or “slobbering”
  • A mouth full of cud or grass
  • Swelling under the jaw (submandibular oedema)

A full oral examination is essential, as similar symptoms can also be caused by foreign objects such as wire, sticks, or other lodged material.

What Causes Woody Tongue?

Woody tongue is caused by the bacterium Actinobacillus lignieresii, which naturally lives in the mouth of cattle.

Infection occurs when the bacteria enter soft tissue through:

  • Cuts or abrasions
  • Sharp feed material (e.g. sticks, awns)
  • Tooth-related injury

What Happens in Affected Animals

When infection develops in the tongue, it becomes:

  • Painful
  • Swollen and firm
  • Nodular due to granuloma formation

In more advanced cases:

  • The tongue becomes hard and inflexible (“woody”)
  • Ulcers may form
  • Eating and swallowing become difficult

If the infection affects the cheeks:

  • Swelling and hardening occur
  • Hair loss may be present
  • Small abscesses can develop

Other Conditions With Similar Signs

Similar clinical signs may also be caused by:

  • Foreign bodies in the mouth
  • Tooth eruption issues (especially in heifers)
  • Drenching injuries
  • Abscesses
  • Actinomycosis (lumpy jaw)
  • Viral ulcers

This is why proper examination by a vet is important.

Treatment for Woody Tongue

The good news is that woody tongue responds well to treatment when caught early.

Treatment options include:

  • Specific antibiotics
  • Intravenous sodium iodide

With prompt treatment, most cattle:

  • Return to normal eating within 48 hours
  • Have a good overall prognosis

When to Call Your Vet

If you notice signs such as drooling, difficulty eating, or unexplained weight loss, it’s important to act early.

Contact your local Vetora clinic for an examination and treatment plan. Early intervention leads to better outcomes and faster recovery.