[The Noble Savage]

It's been awhile, but if I remember correctly you don't get enough Adam to buy all the upgrades (including tonics health bonuses and adam bonuses) so you might have just run out. That's if you buy as soon as they're available. Some things decrease in value as you progress in the game.

If that isn't the case and you just forgot to pick up one of your bears, then yes it should still be where they left it.