.related-products {
  display: block;
  z-index: 9;
}

.card-wrapper .media>img:first-child:not(:only-child) {
    opacity: 1;
}

.card-wrapper .media.media--hover-effect>img+img {
    opacity: 0;
}


.dogs.card-wrapper:hover .media.media--hover-effect > img + img,
.dogs.card-wrapper .media.media--hover-effect > img:first-child:not(:only-child) {
    opacity: 0;
}


.dogs.card-wrapper:hover .media.media--hover-effect > img:first-child:not(:only-child){
  opacity: 1;
}