In no particular order:

!birding@lemmy.world

!blurrypicuresofcats@lemmy.world

!dogs@lemmy.world

!foxes@lemmy.world

!guineapigs@lemmy.world

!herpetology@mander.xyz

!manul@lemmy.blahaj.zone

!otters@lemmy.world

!raccoons@lemmy.world

!snakes@lemmy.world

Some less active honorable mentions:

!animalswithjobs@lemmy.world

!beavers@lemmy.world

!oneorangebraincell@lemmy.world

!squirrels@lemmy.ca

A few I’d like to see get more active:

!animalsbeingderps@lemmy.world

!redpandas@lemmy.world

And thank you for the pets and bun_alert_system!

Both !dogs@lemmy.world and !birding@lemmy.world are pretty active.