From the Animate documentation on GitHub , you can try the following:
<img id="imagem1" class="img-responsive logo fadeIn pulse" src="imagens/logo.png"/>
<style>
#imagem1{
-vendor-animation-duration: 2s;
-vendor-animation-delay: 3s;
-vendor-animation-iteration-count: infinite;
}
</style>
NOTE: replace "vendor" with the applicable prefix (webkit, moz, etc. (for compatibility reasons, I suggest doing with all))
The part of fadeIn, I would use jQuery to, after loading the document and the fadeIn execution the class be removed:
<script type="text/javascript">
$(document).ready(function(){
setTimeout(function(){
$("#imagem1").removeClass("fadeIn");
}, 2000);
});
</script>
Test and see if it works, please.
====================== EDIT 1 ============== ====================
It may be that Animate does not allow (or fails to try) to execute two animations simultaneously on the same element (I'm not sure, I've never tried it and I can not test rs now) / p>
<img id="imagem1" class="img-responsive logo fadeIn" src="imagens/logo.png"/>
<style>
#imagem1{
-vendor-animation-duration: 2s;
-vendor-animation-delay: 3s;
-vendor-animation-iteration-count: infinite;
}
</style>
<script type="text/javascript">
$(document).ready(function(){
setTimeout(function(){
$("#imagem1").removeClass("fadeIn");
$("#imagem1").addClass("pulse");
}, 2000);
});
</script>