The elephants are the biggest animals at the Oklahoma City Zoo, but Dr. Jennifer D'Agostino doesn't want them to get too big.
The weights of the two sisters are monitored daily by a scale built into the floor of their new barn.
â€œWe want to make sure they're not getting too fat,â€ said D'Agostino, director of veterinary services for the zoo. â€œ... It's really important for their overall health.â€
Asha weighs about 7,500 pounds, and Chandra weighs about 7,300. Asha is bigger because she is older, not necessarily because she is pregnant, D'Agostino said.
Both are adolescents, so they're still growing, she said. Asha should only gain a few hundred pounds during her pregnancy.