Young rat snake Sen meets male Jakob, but will they mate or will Jakob eat Sen for dinner?. When Bornean Orangutan Sarkiei becomes sickly, keepers must separate her from prized son Tombol and Rothschild's giraffe Dagmar becomes dangerously thin, keepers must determine whether or not to part her from calf Mburo. The male giant otter pup is struggling to eat and walk.
Newcomer Safi, a rare bongo antelope from the mountains of Kenya, is giving enthusiastic breeding partner Moti the runaround. Very soon the keepers realise why - it seems she may be about to give birth earlier than expected. Sunda gharial crocodiles Frank and Frankie need to have their blood tested - but taking a sample from one of the world's largest and most dangerous reptiles is easier said than done - and George the giant rat needs to have surgery after an X-ray pinpoints a huge lump of hard faeces in his stomach.