Spawners don't default to pig when placed

Same in Android.

I believe this is work as intended. Don't assume all disparity between the versions are bugs

Making it default to pig would just be a hassle. If anything, the bedrock behavior should be implemented on java

Thank you for your report!
However, this issue has been closed as Postponed.

Going forward we're going to be tracking parity issues and feature requests on the Minecraft Feedback Site, and we'll only be tracking bugs here at bugs.mojang.com.

We're already working on achieving parity across versions where possible, and we're very keen to hear your requests or suggestions, so we'd encourage you to make a post at https://feedback.minecraft.net, or upvote an existing topic there.

If you're not sure whether your issue is a parity request or a bug, hopefully this article will help explain further: Parity Request Guide

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If you're watching or have voted for this issue, go here: https://feedback.minecraft.net/hc/en-us/community/posts/360023721831--Java-parity-Spawners-with-pig-inside

If you want Java Edition to follow Bedrock Edition (as per comment #3), go here: https://feedback.minecraft.net/hc/en-us/community/posts/360067062072-Spawners-without-mobs