The bug
When you right click a wolf with meat / an ocelot with fish to make it breed also causes it to sit, respectively stand up.
This is inconsistent compared to the behaviour of healing wolves with meat when they took damage. In that case the wolf won't sit or stand up.
Related issues
is duplicated by
relates to
Comments

Can confirm for MC 1.12.1.
I believe this was fixed in 19w37a with the hand animation changes
Can confirm
Still in 1.10.