Hog-Nosed Bat

I caught mine at 50.44 32.10 in the Hanglands, highmountain. Just did what other people suggested.. killing all non capturable hog-nosed bats I saw, killing all other capturable pets I saw and also killing all other non capturable pets I saw floating around. It spawned within maybe 5-10 minutes. Needed this for my bat collection!

caught mine at 52.78, 34.23 after killing all the other pets in the area. The spawn on this guy is pretty sparse, but I found clearing out everything else helped :)

They seem to share a spawn with the chipmunks and rabbits as well. I have never seen them as secondary pets. I just ran around and checked pets and killed chipmunks and rabbits. Took about 20 mins and hog noses started showing up.

I just found three of them right by Lasan Skyhorn and Aviash in The Haglands. Good luck!

found mine at the start of the path up the mountain 

This is the last pet I need for the Broken Isles Safari acheive, no luck so far!

I have had a toon in Haglands for 2 days killing all hog nosed bats but none have ever appeared with a paw. Can these be a secondary pet, I see many rabbits and chipmonks I could battle in the area?

These definitely are not a time based pet; meaning they spawn during the day and evening.  I didn't see any spawn so I ran around killing the non-pet versions and within 5 minutes I had a spawn appear.  If you're struggling with finding one, give that method a shot!

Found mine in Highmoutian at 49.33,35.97 (top of a mountian). It was the first pet in battle and a RARE!!!

Got mine at 7AM server time, did not see any in the day time so it could be a night time spawn.

There did not seems to be many up at once and the respawn appear to be quite slow or limited.

Confirmed - It's not only a secondary pet found several flying around the top of the mount area in the Harpy section.