Gigaspine are deadly predators. They hunt in packs, tracking creatures with super-focused eye vision and a keen sense of smell. They can run fast enough to outrun speeding traffic and can jump to an equal degree. Their deadliest weapon are razor-blades in place of hands that can slice N' dice pretty much anything, aswell as similar tools on the feet and Tail. They have a limited stealth ability, making it hard to see the bag of chainsaw claws and teeth racing towards you at 90 mph. The pack is normally composed of up to 17 family members, all very protective of eachother but not giving a wet-slap about the life of anything else. You could return them their lost children and they'd still rip you into pieces to numerous to count or even mention, but not before taking back their young of course.
Perhaps the only way to gain some sort of trust from a pack of Gigaspine is to:
A - Be a member of their family
B - Save them from the brink of extinction, yes, ALL OF THEM. ALL AT ONCE.
But either way, you're still not entirely safe of course. Gigaspine are cannibals, but only when in times of dire need, or if you're unable to provide any sort of use to them. THey're very Intelligent, you know.
Gigaspine are not very social (Obviously, seriously dude, DID YOU EVEN READ THE ABOVE???). Their only way of doing so is through a relatively good singing voice. By default, they usually stick to a carnivorous, predatory, aggressive lifestyle. Should the Gigaspine species ever spread to new planets, te Galaxy should be very afraid.