From http://www.w3schools.com (Copyright Refsnes Data)

SVG animate Element

Complete SVG Reference

Definition and Usage

The SVG animate element is used to animate an attribute or property over time.

Example 1

This example creates a rectangle that repeatedly fade away over 5 seconds.

Copy the following code into Notepad and save the file as "animate_1.svg". Place the file in your Web directory:

View example

Example 2

This example animates the x, y, width, and height attributes of a rectangle for a period of 6 seconds (making the rectangle "grow"). It will also change the color of the rectangle with the animateColor element.

Copy the following code into Notepad and save the file as "animate_2.svg". Place the file in your Web directory:

<?xml version="1.0" standalone="no"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"
"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">

<svg width="100%" height="100%" version="1.1"
xmlns="http://www.w3.org/2000/svg">

<rect id="rec" x="300" y="100" width="300"
height="100" style="fill:lime">
<animate attributeName="x" attributeType="XML"
begin="0s" dur="6s" fill="freeze" from="300" to="0"/>
<animate attributeName="y" attributeType="XML"
begin="0s" dur="6s" fill="freeze" from="100" to="0"/>
<animate attributeName="width" attributeType="XML"
begin="0s" dur="6s" fill="freeze" from="300" to="800"/>
<animate attributeName="height" attributeType="XML"
begin="0s" dur="6s" fill="freeze" from="100" to="300"/>
<animateColor attributeName="fill" attributeType="CSS"
from="lime" to="red" begin="2s" dur="4s" fill="freeze"/>
</rect>

</svg>

View example

Complete SVG Reference