Nearer the middle point of the length of the continent is a mountain range. West Catland Mountain Cats (Catus montanis) here have adapted to extremes of temperature and have also moved more Northward than would normally be possible for cats due to living in the mountains. It is cooler and greener in some mountains compared to lowlands, where dust and moisture that passed over dry grassland and desert continues and condenses into dust-seeded rainclouds as it's displaced upwards by the mountains. This rain feeds grassy slopes and small forests and stands of Black Spruce (Picea mariana). The cats here have lush silvery or golden spotted coats as high elevations can bring extremes of cold, high wind speeds and chilly rain. The steepness of the slopes bring great elevation shifts and thus temperature changes. They need not travel far down from the mountain to encounter extreme heat. The limited range of the mountains makes the cats very territorial, more so than their coastal cousins as there are no predators to the cats here at all so don't need many eyes on the lookout.

These cats are smaller than some of the other cats that have evolved but when the weather is cold and their fur fluffs up this can make them look larger and heavier than they really are. Most prey on the slopes are very small, including the short-eared Wooly Rabbits (Cuniculus langier), the largest of the cat's prey. Wooly rabbits are disadvantaged by limited burrowing sites, requiring them to have a lot of endurance on the slopes to escape cats. Soft yet grippy toe pads help them avoid slipping off the rocks in the rain. It's a mesmerising sight to see mountain cats in pursuit of wooly rabbits, both making seemingly impossible runs across invisible cliff footholds and wall-jumping between broken boulders and tree trunks. The rabbits often perform flips and fake-outs in attempt to confuse the cats lose their direct focus. The chase can be perilous for both parties. As a result death by accidental falls is a high statistic for both these cats and rabbits.

Another prey of the mountain cats is the Montane Climbing Mouse (Musculus montanis), which is versatile in all habitats including riverside and in the water, though their main habitat is in the forest and grassy mountain slopes.

A common sight on the greener mountain slopes is a plant called the Shortmint (Brevimenta), a small and conservative descendant of the catnip. This is a highly varied genus due to the way that the different mountain slopes create distinct populations and unique microhabitats. Most species have their own slope of origin, a particular mountain face that the species first arose from before spreading out. Now, many of these different species overlap, meaning that in the wet months like spring and early summer and autumn the slopes are peppered with different colours.