Baby turtles who couldn't find the sea lead to some unbearable scenes in the final Planet Earth 2

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It was hard to accept for a lot of people - knowing that this was the final Sunday night we'd be able to relax in front of Planet Earth 2 - but the fact that we'd be getting an insight into how animals have adapted to life in cities made it slightly easier to stomach.

Of course, not all animals are able to adapt to life in cities, and there were some particularly harrowing scenes showing baby turtles unable to find their way to the sea.

The turtles usually use the moon's reflection on the sea as a guide, but things are more complicated now given how well lit most places are. Sir David Attenborough informed us that 80% born on this particular beach, in Barbados, become disorientated, and many won't make it through their first night.

Thankfully, every turtle spotted by the film crew was returned to the sea.

Their plight really affected people, especially because you know humans are the sole reason for it.

Turtles aside, most of what we saw was pretty inspiring.

Take the langur monkeys in India that are truly loved by the humans around them, and are given plenty of food.

Some people associate langurs with the Hindu God Lord Hanuman, so are revered. As a result, langurs in the city are able to have a lot more babies than forest-dwellers.

They're really looked after.

Elsewhere in India though the scenes weren't so cute. We were shown a majestic leopard strolling through the streets of Mumbai at night, looking for a meal.

A leopard strolls through mumbai
(BBC)

While leopards have attacked almost 200 people in Mumbai over the past 25 years, humans are not their prey.

Piglets are.

What made it harder to watch, other than the squeals, was the fact the older pigs all gave chase.

Although to be fair, there were people walking by who didn't seem fazed at all. Not even a little bit.

And it certainly makes that old nursery rhyme a little more interesting.

Mumbai, probably not where you'd consider a leopard's natural environment, actually has the highest concentration of leopards in the world.

Other stunning scenes included starlings in Rome, where the birds take advantage of the slightly warmer temperatures as compared to surrounding countryside.

Just don't ever park your car in Rome in December.

Meanwhile across the planet in Australia, great bower birds spend most of their time collecting man-made objects to impress females.

And if you've been keeping up with this series, it's definitely not the first time we've seen some odd behaviour from a bird trying to impress.

Although we do not recommend borrowing the bower's methods.

Raccoons, who swap treetops for rooftops in Toronto at winter and keep their offspring warm in chimneys, were another star of the show.

They're also very intelligent. The urban raccoons have been shown to be better at problem solving than their country-dwelling cousins.

But mostly they're really cute.

Another city-dweller shown as highly intelligent was the rhesus macaque monkeys in Jaipur, who commute every morning to get fruit - and other necessities.

They'd literally just drop down from rooftops, steal a bunch of stuff, and disappear again.

It certainly put things in perspective for some people.

Spotted hyenas in Harar, Ethiopia, one of the planet's most vilified species, were shown to have a different side.

Two packs fought over access to the city where they headed straight for the ancient meat market. And while for a moment, upon their arrival, things didn't look good for the butchers, it turns out they're well acquainted.

The butchers put out bones they don't need and hyenas eat them.

People even use special calls to lure the hyenas towards them, before feeding them by hand. There's a belief that the hyenas also eat the bad spirits that roam the streets.

A man feeds a hyena
(BBC)

But these are just the tiny few species that have adapted well to cities. The majority have not.

There was hope though, and Singapore was shown as a symbol of it.

For real, they actually built that. And now Singapore is richer in species than any other city in the world, after planting two million trees in 45 years.

Sir David left us this message before saying goodbye.

Let's do what the man says...