The 24-row catalog lists Black Hole Egg as Ethereal with 100 billion Luck. Luck is not a published hatch probability.
What the catalog supports
Black Hole Egg sits below Cherub Egg in the documented Luck list. Eternal Radar is the listed tool for Ethereal eggs at $30 million. Neither the catalog nor radar guide gives a pet-content table for this egg.
The location evidence conflicts
One community guide says to sweep near spawn and avoid shop clusters. Another egg-location guide lists area stops but does not map Black Hole Egg to a zone. Treat the spawn-area advice as an unverified lead, not a guaranteed location.
A low-waste search plan
Sweep spawn first if it is on your route, then inspect accessible egg stops. Use Eternal Radar when your budget allows. Note the time and check again around the reported eight-minute reset; do not camp one point as a guaranteed spawn.
Weather and pet claims
A competitor describes mutation events affecting eggs, but this is community-reported. Check the current event and egg panel in game before making a purchase or promising a particular mutated hatch.
Community sources differ on exact spawn locations. No verified pet-per-egg table is available.
Questions players ask
Which radar tracks Black Hole Egg?
Eternal Radar matches the documented Ethereal tier and is listed at $30 million.
Where exactly does it spawn?
A community article claims the spawn area; the broader location catalog does not confirm a precise Black Hole coordinate.
Sources
https://ride-a-pet-wiki.org/eggs ↗ · https://rideapet.net/eggs/black-hole-egg-locations/