animal paddock
capable
catches up
chase
chasing
coat
collar
dog
domestic animal
exceptional
faithful
fast
friendly
fun
gentle
green
green area
hair
healthy
involved
lasts
lawn
learned
mammal
meadow
mixed breed
mongrel
nature
outside
plants
pursuit
quadruped
retrieves
rubber ball
runs
snout
specialized
species
speed
spring
tail
trained
trained animal
training
unsurpassed
viviparous
wise
yellow flowers