Original: The wildebeest ( plural wildebeest , wildebeests or wildebai ) , also called the gnu ( or Gnu Answers.com ) , is an antelope of the genus Connochaetes .
Simplified: Wildebeest grow to 1.15 to 1.40 metres ( at the shoulder ) and they weigh between 150 and 250 kilograms when they are fully grown .