Jetragon has 2 routes in, and the breeding one starts after the catch

Set up the ranch first and Jetragon still will not show up.

Counting the routes

Our breeding calculator solves every pair in the game and returns 1 for Jetragon: Jetragon with itself. Our spawn data adds 1 wild spawn point. That adds to 2, though the second route asks you to own one first.

So you catch one, then you breed. Cake in the box changes nothing before that.

Breeding power 70

Our data puts the breeding power of Jetragon at 70, and no other combination in the game lands there. Neptilius sits in the same spot.

Breeding still earns its keep after the catch. Roll a second one for better passive skills, or read how breeding works for the egg timings.

One spawn point at Lv70

Our spawn data records 1 spawn point. The level holds at Lv70 on both ends, so every one you meet is fully grown. Rarity is 20.

No night-only flag sits on it. Skip the wait for dark and bring armor that survives an Lv70 hit. Our data also records an alpha at that point, which rewards laps on the same spot, and with 1 point on the map you have no backup. What spawns in each level band covers the rest of that range.

After the catch

HP 115, Attack 140, Defense 120. The attack stat carries it and the defense holds up. Dragon element, single typing.

Work suitability is Gathering 8 and nothing else. The number ranks high, though an XL Pal eats a base slot for that one job, and food 9 empties the feed box fast. Paldeck No.202. Base Pals that cover several jobs covers who else earns that slot.