Melbourne Zooโs cutest new attraction โ the three-week-old Pygmy Hippo named Obi โ has taken his first swim with mum.
He might be young, but heโs not that little โ keepers say he is a fast grower.
From his birth weight of around five kilos, Obi has put on roughly 500 grams a day and now weighs over 13 kilos.

Pics: Supplied Melbourne Zoo
โMum Petre has been an excellent and attentive mother, helping him with his swimming and ensuring he never strays too far,โ Melbourne Zoo staff wrote in a press release.
โHe has been leaning to swim in the nursery yard pool and passed with flying colours.โ

Pics: Supplied Melbourne Zoo
Wild Sea Manager, Justin Valentine said Obi โloves the water and spends hours in the small pool, so he is ready for the next step.โ

Pics: Supplied Melbourne Zoo
The 3-week old calf has been named Obi by zoo keepers. The name means โheartโ in Igob, a Nigerian language.

Pics: Supplied Melbourne Zoo
Pygmy Hippos are classified as endangered in the wild, however, due to their dense rainforest habitat their exact population size is unknown.