A month has pass, and it is now spring. And things start to warm again, and dinosaurs as usual went about their lives of living. Some herds of them were seen with ancient Mammals.

One day, Twilight saw a herd of Iguanodon, and with them was an extinct species of Camlidae, called Aepycamelus. And they almost looked like a mixed of Llama and a Giraffe.

It's likely that the Aepycamelus are travelling with the Iguanodons for protection. And the Aepycamelus have a higher vantage look as if they can act as lookouts for predators.

This is actually one of the first sightings of dinosaurs and Mammals living in the herd.

Of course Twilight was amazed of seeing this, but then she turns to the Canterlot mountain, and sees that it still bares the scar of the great eruption that happened almost a year ago.

Twilight still sometimes get nightmares of that day, and that she nearly lost her life in the ash plume.

She still doesn't understand how not a single pony ever realized that it was a dormant volcano for all this time. She remembers one time that sometimes the volcano's barrel in the crater and sometimes be seal off by magma. It's likely why no one ever noticed it.

Twilight was so in tuned from the memory, that it was only a bellow broke her out of her trance.

"Huh?" Twilight looks around.

Soon, another bellow as heard, and she begins to follow where it came from.

She followed 3 more bellows before she arrived at the town's biggest lake. And there was a very large Mammal, at first glance it looked like a cross between a Rhino, Giraffe and an Elephant combined.

In fact, it was twice as big as an Elephant as well, and bigger than most Dinosaurs.

This was in fact, the largest land Mammal of all time.

Paraceratherium.

These giants lived in Mongolia in the Oligocene, 25 million years ago.

In fact, the Paraceratherium is actually a mother with a calf. The calf is a male, and is only 3 months old. When he was born, he was already 500 pounds.

Twilight watches from one side of the lake where the mother won't see her as a threat to her calf. And like Giraffes, she spreads her front legs, and lowers back down to drink.

The mother herself weighs 12 tons, and is too big for predators to even touch her. But her calf has a long way to go before reaching adulthood, and where a predator won't touch him.

Paraceratherium calves stay with their mothers for 3 years before being fully independent.

Not since the Dinosaurs has nature got this big.

Paraceratherium are related to Rhinos, but their size is in a different league. A fully grown male stands over 20 feet tall, and weighs in at 15 tons. That's equivalent to 8 modern Rhinos, 2 African Elephants, and 500 ponies.

No other land animal after even comes close.

Being big not only protects them from predators, but in their desert home, allows them too go for without food or water for days.

Soon, the mother and calf begin to head other to the trees to feed. Like Giraffes and some of the Sauropods, the mother Paraceratherium feeds on the highest branches. And all Giraffes, she has the tops of the branches to herself. Another advantage of being big, and to help reach branches, she has a hook like upper lip that acts like a finger. It's the same method with Black Rhinos with browsing in branches of bushes.

Nearby the mother and calf, was group of strange Gorilla like creature from the same region with Paraceratherium. They're called Chalicotheres, they stand 100 feet tall, and walk on their knuckles to keep their claws sharp and protected.

Twilight even noticed they eat similar to how Pandas do, but the Chalicothere's closest relatives are actually Horses, including her.

As the mother Paraceratherium browses, she has the tops of trees to herself. It's another advantage of being big.

Still living on his mother's milk, the calf wanders away and tries to copy her by reaching some branches that are barely from his reach.

However this is a bad time for him to wander off on his own. And Twilight is possible as well in trouble.

Just 60 feet away, was one of Mongolia Oligocene's top predator is stalking.

A Hyaenodon.

Despite the name, their not really relatives of Hyenas.

And the Hyaenodon watches from some rocks picking a target. Either the calf, Twilight, or the Chalicotheres.

After a few minutes, the Hyaenodon springs from his hiding place. And charges straight towards an unexpected Chalicothere as he turns and rears on his back legs. But the Hyaenodon leaps and caught the Chalicothere by the neck, and holds the animal to the ground.

And the Chalicothere howlers in painfully distress as the Hyaenodon bites down hard on the neck.

Hyaenodon's jaw have bone shattering force of over 1,000 pounds per square inch. One bite, breaks the Chalicothere's neck.

And soon, the Hyaenodon begins to feed.

They are capable of eating every part of a carcass, even the teeth.

Not today, he isn't going to get the chance. The local bullies have arrived, and he is outnumbered.

And then a roar was heard as the Hyaenodon turns and sees 3 Entelodonts roaring at him. And clearly they want the carcass, and Twilight piers her head from behind a rock and watches.

Entelodonts are large 6 foot devil versions of the Warthog.

Soon, one Entelodont came in and pulls a limb off of the carcass. And feeds as another joins him as the other roars to drive off the Hyaenodon. And soon, they begin to circle around the Hyaenodon, and soon he starts to run away as the Entelodonts begin to feed off the carcass.

The Hogs from Hell, have won the prize.

Twilight could hardly believe what happened, the roars were so loud that even the whole town heard them. And Entelodonts and Hyaenodons are serious competition in Mongolia, and one fossil of a Hyaenodon shoulder blade showed it busted from a Entelodont skull bump. Proving they are deadly enemies with each other.

Not wanting to stick around any longer, Twilight begins to move away from the killer hogs.

And heads back to the lake, and see the calf Paraceratherium back with his mother. Can close by her, was a mother Bear Dog and her 2 cubs. The Bear Dog happens to be related to both Bears and Dogs.

And soon, Twilight decides to head back to the castle to see of what she can know about them.


Next Time:

Twilight and her friends discover the origins of their past.

And discover their past was once a world where they were prey.

Species Shown:

Aepycamelus

Paraceratherium

Chalicothere

Hyaenodon

Entelodont