SILENT HEAT (NO VISIBLE SIGNS OF ESTRUS)
WHAT THIS SYMPTOM USUALLY MEANS
Silent heat occurs when hormonal changes take place internally, but outward signs like bleeding or swelling don’t appear.
MOST COMMON CAUSES
MILD
• Young females in early cycles
• Mild hormonal variation
MEDICAL
• Ovarian dysfunction
• Hypothyroidism
• Systemic illness suppressing estrus
• Fertility issues (if breeding)
EMERGENCY
Silent heat itself isn’t an emergency—BUT lack of estrus can mask underlying ovarian
disease.
RED FLAGS
• No heat cycles for >12 months
• Abdominal pain
• Discharge without heat
• If unsure, treat as urgent.
AT-HOME CARE
• Monitor behavior changes
• Track any subtle signs of estrus
WHAT A VETERINARIAN WILL CHECK
• Hormone panel
• Thyroid testing
• Ultrasound
• CBC/chemistry
MOST LIKELY DIAGNOSES
• Subclinical estrus
• Hormonal suppression
• Ovarian cyst
• Thyroid disease
WHEN TO SCHEDULE
• Within 2 weeks: suspected silent heat
• Today: discharge or pain
LONGEVITY IMPACT
Silent hormonal abnormalities predict longer-term metabolic issues.
LONGEVITY CONSULT
Recommended for cycle irregularities.