I'll chime in again, to agree with the ones above who said that if it's got to be a knife, make it a bit more versatile than a dagger while still being lethal and very effective against two or four legged predators. I wholeheartedly recommend these two
their pointy tips will pierce with the utmost ease, and they're very capable slashers, fast in the hand, really easy to sharpen, good grip and the CRKT has an extraordinarily well made sheath. None will break the bank, and their 7" blades will reach and tear the internals of the largest big cats/dogs out there
they will at the same time cut your food, slice that bag open or let you do normal knife tasks and chores around