Despite their enormous size, hippos are great swimmers and can hold their breath for up to five minutes underwater! That fact is almost as fun as this planter, Choose to include a cactus or succulent so that this hippo is ready to rock your home, office, or make someone's day as a gift. These plants are low-maintenance, Made from: Plastic, sand, soil, stones, cactus or succulent. this hippo is around 16cm long, 6cm wide, with a planter hole of 2.5 x 3.5 cm. The most common cactus or succulent killer is over watering. Your cactus wants 'dry feet' as its typical terrains are dry and arid, so go easy on H2O so the roots don't rot.