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Is the pitter-patter of tiny tiger feet imminent? After weeks of speculation, Kate Humble and Ben Fogle reveal that the signs are that rare Amur tiger Yana is definitely pregnant.

Anxious not to miss the historic birth of cubs – the first at the park for nearly 20 years – keepers install special cameras in the Tiger House, which will also enable them to closely monitor Yana’s health at a safe distance.

Everyone holds their breath as first-time mum Yana finally goes into labour. But her cub is lifeless. Is this stillborn going to be her one and only cub? If there are others on the way, are they likely to face the same fate? What are the chances of healthy cubs?

Kate catches up on life in the Gorilla House with the focus on silverback Kesho. Believed to be the only gorilla in the world with a syndrome which means he has an extra female chromosome, might this explain his sometimes baffling behaviour? An expert in the condition in humans helps to unravel the reasons for Kesho being the way he is.

Oryx antelope aren’t just rare, they’re extinct in the wild. Beautiful and graceful with metre-long horns, it’s believed they are behind the myth of the unicorn. But one oryx is in trouble and needs help with a nasty wound.

And Jean Johansson discovers why coconuts are just the job for the dental health of Cape porcupines.