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There was a book that I read 2 years ago but I can’t remember what it was called!
It starts with a space vessel leaving a sector of space, I think it was a carrier full of scientists? But while they are out the captain knows of a ship that was lost in the sector they are jumping to. As they reach the sector some aliens board the ship, kinda wolf like and they rush around really fast and are twice as strong. As if they were used to a stronger gravity. As they start to take over the ship, making their way to the bridge, the captain quickly orders a ship wide panic, having everyone hide. The unknown creatures take over the ship and order their captain to take them back to the creatures homeland.
They arrive at the homeland and gravity is 2 times as harsher compared to what humans were used to, and they have to fight a lot of the the creatures they don’t even know about as the Wolf like creatures leave them on their planet so they can duel them when they return. I don’t remember anything to much past that in the rest of the series, other than they meet and make peace with a sabertooth like cat on the world, and they start to genetically modify themselves so they can work better on the world, and having children who are used to everything and are twice as fast. The kids learn how to work the alien space ship that was left behind and they all start to rush back to Earth with their new abilities to stop them from attacking the sector before they reach Earth.