Animated Gif in iOS app not playing

ionic-v1
3

I put it inside a slide box

ion-view(title='Tutorial')
    ion-nav-buttons(side="right" )
        span.button.button-clear(ui-sref="home" ng-show="show_button.skip_tutorial").
            Skip tutorial <i class="icon ion-ios7-arrow-forward"/>
    ion-content.has-header
        div(cg-busy="{promise:busy,message:'load'}" )
 ion-slide-box(on-slide-changed="update_header($index)")
    ion-slide
        div.card.list
            div(class="item" )
                  img(src="images/tutorial/toggleswitch.gif" style="width:100%" )

Thanks for responding =) I am unclear what is causing this response