What is the fine-grained topic of the following text: I had the privilege of accompanying Sue Downie (Black Rhino Monitoring Project), Dr Pete Morkel (Co-ordinator of Rhino Projects, Frankfurt Zoological Society) and the SANParks veterinary team to Karoo National Park to assist in their quest to improve the eating capabilities of Mpumalele, a +/-28 year old black rhino. Only return the topic.
Assisting in improving the eating capabilities of Mpumalele, a black rhino in Karoo National Park.