This is item 1012 Beagle 'Beau' adult male seated by Tom Masterson.
It stands 2 1/2" tall and is part of the Pedigree line, which used to be called the Designers Workshop line, these items are larger and more detailed than the miniatures line.
He was first introduced in 1954 was in and out of the line until 1974 but has been reintroduced.
He was produced with and without the base. The ones without the base are older.