Lassie (TV Series) as
Porky Brockway / Sylvester 'Porky' Brockway
- Timmy's Family (1957) - Porky Brockway (as Donald Keeler)
- Transition (1957) - Porky Brockway (as Donald Keeler)
- The Tooth (1957) - Porky Brockway (as Donald Keeler)
- The Wolf Cub (1957) - Porky Brockway
- Happy (1957) - Porky Brockway (as Donald Keeler)
- The Spartan (1957) - Porky Brockway (as Donald Keeler)
- The Elephant (1957) - Porky Brockway (as Donald Keeler)
- The Ballerina (1957) - Porky Brockway (as Donald Keeler)
- The Raccoon (1957) - Porky Brockway (as Donald Keeler)
- The Burro (1957) - Porky Brockway (as Donald Keeler)
- Graduation (1957) - Porky Brockway
- The Suit (1957) - Porky Brockway (as Donald Keeler)
- The Runaway (1957) - Porky Brockway (as Donald Keeler)
- Jeff's Moustache (1957) - Porky Brockway (as Donald Keeler)
- The Harvesters (1957) - Porky Brockway (as Donald Keeler)
- The Apple Tree (1957) - Porky Brockway (as Donald Keeler)
- Poverty (1957) - Porky Brockway (as Donald Keeler)
- Father Ellen (1957) - Sylvester 'Porky' Brockway (as Donald Keeler)
- The Nest (1957) - Sylvester 'Porky' Brockway (as Donald Keeler)
- Haunted House (1957) - Porky Brockway (as Donald Keeler)
- The Snob (1957) - Porky Brockway (as Donald Keeler)
- Boy's Day (1957) - Porky Brockway (as Donald Keeler)
- The Dog House (1957) - Porky Brockway (as Donald Keeler)
- Bird Watchers (1957) - Sylvester 'Porky' Brockway (as Donald Keeler)
- Survival (1957) - Porky Brockway (as Donald Keeler)
- The Artist (1957) - Porky Brockway (as Donald Keeler)
- The Rock (1957) - Sylvester 'Porky' Brockway (as Donald Keeler)
- Lassie's Day (1957) - Porky Brockway (as Donald Keeler)
- The Chimp (1957) - Porky Brockway (as Donald Keeler)
- Vigil (1957) - Porky Brockway (as Donald Keeler)
- Champion (1957) - Porky Brockway (as Donald Keeler)
- Lassie's Vanity (1957) - Porky Brockway (as Donald Keeler)
- Goodbye Forever (1957) - Porky Brockway (as Donald Keeler)
- Superstition (1956) - Porky Brockway (as Donald Keeler)
- Party Line (1956) - Porky Brockway (as Donald Keeler)
- A Place for Everything (1956) - Porky Brockway (as Donald Keeler)
- Goats (1956) - Porky Brockway (as Donald Keeler)
- The Tractor (1956) - Porky Brockway (as Donald Keeler)
- The Challenge (1956) - Porky Brockway (as Donald Keeler)
- Fish Conservation (1956) - Porky Brockway (as Donald Keeler)
- Gossip (1956) - Sylvester 'Porky' Brockway (as Donald Keeler)
- Local Elections (1956) - Porky Brockway (as Donald Keeler)
- Transfusion (1956) - Porky Brockway (as Donald Keeler)
- The Fish Story (1956) - Porky Brockway (as Donald Keeler)
- Hoax (1956) - Porky Brockway (as Donald Keeler)
- The Watch (1956) - Porky Brockway (as Donald Keeler)
- Bone (1956) - Porky Brockway (as Donald Keeler)
- Quarantine (1956) - Porky Brockway (as Donald Keeler)
- Friendship (1956) - Porky Brockway (as Donald Keeler)
- Bee Hive (1956) - Porky Brockway (as Donald Keeler)
- The Frog (1956) - Sylvester 'Porky' Brockway (as Donald Keeler)
- Diane (1956) - Porky Brockway (as Donald Keeler)
- The Haircut (1956) - Sylvester 'Porky' Brockway (as Donald Keeler)
- War Dog (1956) - Porky Brockway (as Donald Keeler)
- The Crop Duster (1956) - Porky Brockway (as Donald Keeler)
- The Calf (1956) - Porky Brockway (as Donald Keeler)
- The Marauder (1956) - Porky Brockway (as Donald Keeler)
- Domino (1956) - Porky Brockway (as Donald Keeler)
- The Deer Hunter (1956) - Porky Brockway (as Donald Keeler)
- Sunday School (1956) - Porky Brockway (as Donald Keeler)
- The Child (1956) - Porky Brockway (as Donald Keeler)
- Lassie's Double (1956) - Porky Brockway (as Donald Keeler)
- The Vet (1956) - Porky Brockway (as Donald Keeler)
- The Raft (1956) - Porky Brockway (as Donald Keeler)
- The Visitor (1956) - Porky Brockway (as Donald Keeler)
- The Tree House (1956) - Porky Brockway (as Donald Keeler)
- The Hawk (1956) - Porky Brockway (as Donald Keeler)
- The Trial (1956) - Porky Brockway (as Donald Keeler)
- Pokey (1956) - Sylvester 'Porky' Brockway (as Donald Keeler)
- The Dog Catcher (1956) - Porky Brockway (as Donald Keeler)
- The Stamp Album (1956) - Porky Brockway (as Donald Keeler)
- Gramps' Birthday (1955) - Porky Brockway (as Donald Keeler)
- The Twister (1955) - Porky Brockway (as Donald Keeler)
- The Clown (1955) - Sylvester 'Porky' Brockway (as Donald Keeler)
- The Newspaper (1955) - Porky Brockway (as Donald Keeler)
- The Wild Duck (1955) - Porky Brockway (as Donald Keeler)
- The Witch (1955) - Sylvester 'Porky' Brockway (as Donald Keeler)
- The Monster (1955) - Porky Brockway (as Donald Keeler)
- The School (1955) - Porky Brockway (as Donald Keeler)
- The Violin (1955) - Porky Brockway (as Donald Keeler)
- The Dog Show (1955) - Porky Brockway (as Donald Keeler)
- The Pit (1955) - Sylvester 'Porky' Brockway (as Donald Keeler)
- The Injury (1955) - Porky Brockway (as Donald Keeler)
- The Fawn (1955) - Porky Brockway (as Donald Keeler)
- Father (1955) - Porky Brockway (as Donald Keeler)
- The Brat (1955) - Porky Brockway (as Donald Keeler)
- Sale of Lassie (1954) - Sylvester 'Porky' Brockway (as Donald Keeler)
- Gramps (1954) - Porky Brockway (as Donald Keeler)
- The Lion (1954) - Porky Brockway (as Donald Keeler)
- Feud (1954) - Porky Brockway (as Donald Keeler)
- Arithmetic (1954) - Sylvester 'Porky' Brockway (as Donald Keeler)