It does not seem to have any distinct markings. Will markings develop as he gets older? Should I keep him as a pet without knowing what kind of snake he is?
Answers:
Unless you're an experienced herpetologist (snake expert), I really suggest you let the snake go into the wild. Snakes realy aren't well suited as 'pets'. Snakes have a lot of instinct, do not domesticate well, and since they are not social/communal animals, do not really form bonds with anyone/anything, not even each other.
As to your questions, baby snakes usually become more distinct in their markings after their first few moltings.
Without knowing what actual snake you have is inherently dangerous because a snake will instinctively and readily bite you even if its non-venomous when it feels threatened. If it is a poisonous snake and a baby, it is MORE likely to be dangerous because it will not have learned venom control yet.
Many adults will defensively 'dry bite' which means they do not inject venom in order to conserve this fairly valuable resource (It can take days for a snake to replenish it's supply of venom until which it is very vulnerable).
You can. Call a vet in the and ask them it they can give insight on what type of snake it is, and if it is sutible for a pet.
No you should not. If it's poisonous you are just asking to be bit by it. Your best bet is to call animal control or whatever they call it there and let them take it off your hands. Last time I checked it didn't cost anything. If you are not sure what species it is, you are playing a very dangerous game.
never keep a pet that you dont know anything about. especially one that has the potential to be poisonous, and hard to care for. if you decide to just keep him off the bat, get him a warm basking light or heat rock and non warm light to bask, this is ESSENTIAL, as he's cold blooded and needs it to survive and digest foods. second he'll need live food, see what he'll eat, ants, crickets, mealworms, mice etc. also, a shoebox is not an acceptable home or anything like that, he'll need an aquarium or specialized cage that includes plants substrate and areas to hide.
call the vet.or it may be a worm.
Husband just caught one in our house the other day. Where there is baby snake, there is momma snake! They aren't maternal, but I mean there are probable more! Put it outside to take care of mice! go on internet look up snakes to make sure it isn't poisonous if your determined to keep it, just cause its a baby doesn't mean the venom can't make you sick if it bites you!!
