if the critter was healthy and you wanted to keep it, you would
have to earn its trust...
hold out some food near to you... so that it cannot make a lunge
and get it... do not look at it.. look slightly away from it...
it may go on for hours.. but eventually, it'll come to you and
eat the food..
slowly reach out to pet it..
keep doing that each time.. and he'll learn that you're not a
threat but may be a source of food and a protector or friend..
and in time, he becomes yours 
i wish i could do that sometimes
