With out changing the order of "select:Option" how to make a specific option as selected by default in visual force <apex:seleList>?

<apex:page >
    <apex:form>
        <apex:selectList size="1">
            <apex:selectOption itemLabel="Ape" itemValue="Ape"/>
            <apex:selectOption itemLabel="Bat" itemValue="Bat"/>
            <apex:selectOption itemLabel="Cat" itemValue="Cat"/>
            <apex:selectOption itemLabel="Dog" itemValue="Dog"/>
            <apex:selectOption itemLabel="Elephant" itemValue="Elephant"/>
    	</apex:selectList>
    </apex:form>
</apex:page>

Here "Ape" is selected by default since it is the first option but With out changing the order of the <apex:selectOption> I want to make "Dog" as selected by default.

Please tell me how to achieve this without using Apex and without using script if possible
Thanks in advance

Without Apex and JavaScript? that's a lot of limitation and I don't know what's the point of the page, how are you going to use the value in any way.

You could always downgrade it all the way to pure HTML

<apex:page>
    <select>
        <option>Ape</option>
        <option>Bat</option>
        <option>Cat</option>
        <option selected="true">Dog</option>
        <option>Elephant</option>
    </select>
</apex:page>