Longest-lived two-headed cow
Who
Gemini
What
534 day(s)
Where
United States (Battle Creek)
When
The longest time a two-headed cow has lived is 17 months 15 days. Gemini, a heifer Holstein calf, was born on 4 August 1991 on Russell and Perry Stowells' Farm in Woodland, Michigan, USA weighing 340 kg (749 lb) and died on 19 January 1993.