Add punctuation: Training days followed up by individual coaching sessions
A: Training days, followed up by individual coaching sessions.

Add punctuation: The old bags Bottles and packaging kill birds and fish At the end of the plastic ends ground into invisible particles in our food
A: The old bags, Bottles and packaging kill birds and fish. At the end of the plastic ends, ground into invisible particles, in our food.

Add punctuation: If the dog has any indwelling catheters these must be removed
A:
If the dog has any indwelling catheters, these must be removed.