The first was from a rather large cat who came up the driveway, spent a while trying but finally succeeded in squeezing under our gate, went under the deck, out the other side, and left via the diagonally-opposite corner of the back yard. The straight-line of the path taken leads me to suspect this cat's done this before.
The second was from a smallish rabbit who explored our front yard, came into the driveway, spent a while underneath my car, then hopped off further down the street.
Then I saw cardinals in at the neighbor's birdfeeder.
I'm hoping the increased animal activity is an omen of an early spring.