I have loved leopards (ever) since I was a child.

I find their spotted fur with the different white, yellow, and black tones astonishingly beautiful.

Their strength, stealth movements, and muscular power that can be put into action within fractions of a second contribute to my amazement. / It amazes me how their strength, stealth movements, and muscular power can be put into action within fractions of a second.

Leopards are the smallest members of the “big cats” family, with atheir weight ranging from only 25 to 90 Kg in very big males.

Specimens living in deserts or very barren areas tend to achieve lower weights, whereas the biggest ones are normally to be found in dense forests inof Africa.

In these habitats, they don’t have to compete with hyenas and lions and, therefore, they are at the top/summit of the food chain.

Due to that, these big leopards spend more time directly on the ground as well.

The weight of a tigers could reachieve more than 300 Kkg (Siberian tigers); that of a lions: more than 200 Kkg.

The weight (measure) of Jaguars, the biggest cats in America, can range up to 150 Kkg.

Even cougars, that technically don’t belong to the same family as leopards (cougars don’t roar but ratheyr meow), achieve more impressive sizes than leopards.

Big mountain cougars can be oin the range of 110 – 115 Kg, nkg. Nevertheless, average specimens are much smaller, with (an average weight of about 50 -(to) 60 Kg).

There leopards have to deal/compete with lions, hyenas, cheetahs and wild dogs.

Cheetahs are not (considered) a problem, thensince/as they are weaker and smaller than leopards.

A lonely big hyena could beis not a big deal, but normally they hunt in packs, so/therefore fighting them is not an option.

According to context, I assume you wanted to say "A lonely big hyena is not a big deal"?

Due to that leopards make good use of trees whilen living in the savanna.

They climb onto the trees after (they are done hunting)/(the hunt)/hunting to putkeep their prey safe from hyenas and wild dogs, thenwhich cannot climb the trees/ as they cannot climb the trees.

Trees are as welllso a safe place to rest and to seek refuge, due to the aforementioned reasons.

Lions can sometimes try to followchase leopards up on the trees, but normally with small/usually with little success.

The spotted big cat is much more skilled (climber)/(ato climbing).

Much more is comparison it need an object, either in the sentence or context. Much more skilled than who/what?

I find their spotted fur with the differentalternating white, yellow and black tones astonishingly beautiful.

Their strength, stealthful movements and muscular power that can be put into action within fractions of a second contribute to my amazement.

Leopards are the smallest members of the “big cats” family, with a weight ranging from only 25 to 90 Kg in very bigthe largest males.

Their high adaptabilityability to adapt has allowed them to dwell in very differenta variety of habitats and that has a big influence on their weight.

Specimens living in deserts or very barren areas tend to hachieve lower weights, whereas the biggest ones are normally to be found in dense forests in Africa.

In these habitats they don’t have to compete with hyenas and lions and, therefore, they are at the summittop of the food chain.

Due to thate lack of competition, these big leopards spend more time directly on the ground as well.

Although those forest leopards couldan weigh up to 90 Kg, they are by no means the sameequal in size asto their bigger cousins.

Tigers could achieve more thanan reach up to 300 Kg (Siberian tigers);, and lions to more than 200 Kg.

Big mountain cougars can be oin the range of 110 – 115 Kg, nevertheless average specimens are much smaller (an average weight of about 50 - 60 Kg).

The competition with other predators is especially high in the African savanna.

Cheetahs are no problem, then because they are weaker and smaller than leopards.

A lonely big hyena could be a big deal, but normally they hunt in packs, so fighting them is not an option.

Due to that lLeopards make good use of trees when living in the savanna.

They climb onto trees after hunting to putwith their prey to keep it safe from hyenas and wild dogs, then theywhich cannot climb.

Trees are as welllso a safe place to rest and to seek refuge, due to the aforementioned reasons.

Lions can sometimes try to follow leopards up on the trees, but normally with smalllittle success.

The spotted big cat is much more skilled ato climbing.