the sniffer and sniffer egg don´t appared

Hello something strange happened to me, I was playing, building a site for my sniffers, with the site ready I place the two eggs and wait. I hatch one of the eggs and nothing appears, then I wait for the last one and nothing, I go to a separate world and I didn't see the egg that immediately generates the sniffer and neither the sniffer, but I could hear it. Here is a videos and photo as proof (sorry for the audio of the video, I had problems recording it and this is the best I have, sorry).