Please help...

I have a 4 month old rat, but I've noticed that he often has little fits, two different kinds. The first is when hes stationary, but jerks back and forth quite abruptly and makes a squeak sound every time he moves, then stops after a minute or two. And the second is when he's running around he goes very "hyper" sometimes and doesn't like you petting him till he's calmed down after a minute or so.

Should I take him to the vet?

sounds like a normal rat to me. the first one sounds like he's hiccuping. the second just sounds like a mad rush around the cage.

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I OWN A CHOCOLATE ROAN COCKER SPANIEL
RIP David xx Run free at the bridge. Love you always xx 19th February 2011
RIP Jack and Mickey xx Run free at the bridge. Love you forever xx 20th June 2011

Sounds perfectly normal to me, the first does sound like a hiccup, but could be a sneeze, which would mean a respritory infection, but I wouldn't worry about it yet, as when my rats started sneezing they got over it in a couple days
And the second just sounds like a hyper rat, which I'm sure all rats do the same

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Just agreeing with everyone else...sounds like hiccups and popcorning to me...I have just had my latest addition (I now have four ratties) running over the sofa like a crazy thing. She'll calm down & crash out in a minute - bless her

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Proud mum to Fluffy,Indie, Minnie, Loki, Tyr, Jinx & Onyx .......RIP Honey Cookie and Banoffee

Thank you for your replies, really put me at ease He's a happy wee ratty, so i guess thats why hes so hyper! when he was a baby he had a bad cold type thing and was on baytril, i guess thats why hes having little sneezes. x