You can apply the following css to your SVG to animate it. For eyes, you will need to measure transform-origin i.e. distance of the center of each eye from the top and leftmost part of the SVG.
/* Keyframes */
@keyframes eyes {
0%{
transform: scale(1,1);
}
27.5%{
transform: scale(1,1);
}
30%{
transform: scale(1.5,0.5);
}
32.5%{
transform: scale(1,1);
}
45%{
transform: scale(1,1);
}
100%{
transform: scale(1,1);
}
}
/* Eyes */
#left-eye{
transform-origin: 181px 137px;
animation: eyes 4s linear infinite;
}
#right-eye{
transform-origin: 161px 139px;
animation: eyes 4s linear infinite;
}